The National Union Catalog, Pre-1956 Imprints PDF Download

Author:
Publisher:
ISBN:
Category : Union catalogs
Languages : en
Pages : 702

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Author: National Agricultural Library (U.S.)
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 810

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Author: National Agricultural Library (U.S.)
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 808

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Author: David R. Smith
Publisher:
ISBN:
Category : Sawflies
Languages : en
Pages : 210

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Author: Nelson G. Hairston
Publisher: Cambridge University Press
ISBN: 9780521346924
Category : Nature
Languages : en
Pages : 392

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Ecological Experiments stresses the importance to ecology of field experiments, where variables are manipulated in order to collect data on specific hypotheses, as opposed to the more passive observational method. The book begins by introducing a series of ecological questions that can be addressed experimentally for example, what is the significance of competition among species? The minimal requirements of experimental design that must be met are then introduced, together with examples of good and poor experiments from the ecological literature and a consideration of the trade-offs that may be forced on the experimenter by field conditions. All ecologists, and especially students beginning their careers in field study, will find in this text a good introduction to the experimental foundation of ecology.

Author: David Rollins Smith
Publisher:
ISBN:
Category : Sawflies
Languages : en
Pages : 212

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Author: Canada. Agriculture Canada. Research Branch
Publisher: Canadian Government Publishing
ISBN:
Category : Science
Languages : en
Pages : 688

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This publication is the result of a course on identification of Hymenoptera given three times since 1985 at the Centre for Land and Biological Resources Research. The considerable interest in these courses indicated the need for a comprehensive identification guide to all extant families of Hymenoptera. The main emphasis is on family identification using the keys, which are complemented by family sketches. The sketches include a taxonomic diagnosis to supplement the keys, a summary of the biology, the size and distribution, and important literature references.

Author: Maurice Burton
Publisher: Marshall Cavendish
ISBN: 9780761472827
Category : Science
Languages : en
Pages : 146

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This twenty-two volume set presents the appearance and behavior of thousands of species of animals along with species population and prospects for survival in a arranged alphabetically and easy-to-read format.

Author: Charles Adams
Publisher: Routledge
ISBN: 1317937767
Category : Business & Economics
Languages : en
Pages : 708

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This colourful guide will introduce you to the fundamentals of horticulture, whether you are taking a Level 2 RHS, City and Guilds or BTEC course, are a keen amateur or seasoned gardener. Written in a clear and accessible style, this book covers the principles that underpin growing plants for the garden and allotment; with reference to how these are tackled by professionals. With highlighted definitions, key points, and illustrated in full colour, this book will be a useful companion as you progress in the study and practice of horticulture.

Author: Andreas Taegar
Publisher:
ISBN: 9781869775551
Category : Hymenoptera
Languages : en
Pages : 1064

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