Pearls: Natural, Cultured and Imitation (Butterworths Gem by Alexander E. Farn

By Alexander E. Farn

Pearl: normal, Cultured and Imitation discusses a few features, contrast, and authenticity of pearl. This publication is split into 10 chapters that conceal the foundation, anatomy, assets, and costs of this beneficial gem.
The first 5 chapters are dedicated to traditional pearls, their specific positive aspects, starting place, historical past, constitution, anatomy, and resource. the following chapters hide cultivation and checking out of cultured pearls, in addition to their marketplace worth. A bankruptcy specializes in the homes of assorted imitation pearls. The concluding chapters take care of the pricing of pearls, based on an intricate strategy utilizing a base fee often called the “unit base price”. those chapters additionally reflect on different pearl makes use of except necklaces, akin to borders to brooches and festoons.
This booklet might be of significant price to pearl investors, brands, and clients.

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Integrated Pest Management: Concepts, Tactics, Strategies by Edward B. Radcliffe, William D. Hutchison, Rafael E.

By Edward B. Radcliffe, William D. Hutchison, Rafael E. Cancelado

Built-in Pest administration (IPM) is a good and environmentally delicate method of pest administration. It makes use of common predators, pest-resistant vegetation, and different easy methods to guard a fit surroundings that allows you to lessen reliance on damaging insecticides. that includes 40 chapters written by means of major specialists, this textbook covers a vast and entire variety of issues in built-in pest administration, targeted totally on conception and ideas. it truly is complemented by way of award profitable web pages, that are frequently up-to-date and emphasize particular IPM strategies, their software, and IPM case reports: Radcliffe's IPM global Textbook - VegEdge - the 2 items are totally cross-referenced and shape a special and hugely helpful source. Written with a global viewers in brain, this article is acceptable for complicated undergraduate and graduate classes on built-in Pest administration, Insect or Arthropod Pest administration. it's also a invaluable source for researchers, extension experts and IPM practitioners around the world.

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Müller/Bährmann Bestimmung wirbelloser Tiere: Bildtafeln für by Günter Köhler

By Günter Köhler

Die in drei Jahrzehnten erprobten Bestimmungstafeln erfreuen sich aufgrund ihrer instruktiven Strichzeichnungen und der erläuternden Texte eines unverändert regen Zuspruchs.

Kurze Einführungen in 20 Tiergruppen (und Gallen) geben Auskunft über Baueigentümlichkeiten, Besonderheiten in der Lebensweise, Beobachtungs- und Sammelmöglichkeiten sowie Hinweise zum Artenschutz. Beschrieben werden terrestrische und limnische Arten bzw. Artengruppen, die sich ohne Spezialkenntnisse bestimmen lassen. Nur bei schwierigen Taxa enden die Bestimmungsgänge oftmals bei Gattungen oder Familien. Anhand der Bildskizzen und meist dichotomer Entscheidungsschritte lassen sich ungefähr 2500 Arten bzw. Gattungen wirbelloser Tiere bestimmen. Das sign up erschließt sämtliche in den Bildtafeln genannte wissenschaftliche und deutsche Namen sowie häufig gebrauchte Synonyme. Das Literaturverzeichnis enthält wichtige weiterführende Bestimmungswerke zu den jeweiligen Tiergruppen.

In der 7. Neuauflage wurden einige Bestimmungsgänge weiter verbessert, Taxonnamen aktualisiert und häufig gewordene invasive Arten erstmals berücksichtigt. Völlig neu bearbeitet wurden die Bestimmungstafeln für Steinfliegen, Zikaden und Skorpionfliegen.

Schüler, Studenten und Naturfreunde können mit Hilfe dieses praktischen Bestimmungsbuches auf einfache Weise eine große Anzahl wirbelloser Tiere sicher ansprechen und diese auch unmittelbar in ihren Lebensräumen kennenlernen.

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Lone Star Menagerie: Adventures with Texas Wildlife by Jim Harris

By Jim Harris

There is multiple type of Texas native—we proportion our awesome kingdom with various different species, a few with 4 legs or extra and a few without legs in any respect. Naturalist Jim Harris has studied such a lot of them, and in Lone megastar Menagerie he stocks a few little-known evidence, attention-grabbing stories, and fun own reviews with those creatures that we are living alongside.

Artfully illustrated by means of the writer, this ebook is either informative and exciting, and you may come away feeling an affinity for the wonders of Texas and its attention-grabbing natural world.

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101 Things You Don't Know About Science and No One Else Does by James Trefil Physics Professor

By James Trefil Physics Professor

James Trefil takes the reader on an exhilarating journey around the borders of present medical knowledge-from astronomy to genetics, from details know-how to cosmology, the good contested questions that preoccupy researchers this present day and may develop into headlines the next day to come. In stylish, witty three-page summations, Dr. Trefil "makes experience of technological know-how for the remainder of us" (Washington Post).

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