A Field Guide To Geology

Autor: David C. Roberts
Publisher: Houghton Mifflin Harcourt
ISBN: 9780618164387
File Size: 27,28 MB
Format: PDF, Kindle
Read: 9704
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Provides information on each geological region of eastern North America, covering such topics as plate movements, glaciers, rivers, seas, and other forces that shaped the area.

A Field Guide To Trees And Shrubs

Autor: George A. Petrides
Publisher: Houghton Mifflin Harcourt
ISBN: 9780395353707
File Size: 29,74 MB
Format: PDF, ePub, Docs
Read: 6797
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All the wild trees, shrubs, and woody vines in the area north to Newfoundland, south to North Carolina and Tennessee, and west to the Dakotas and Kansas are described in detail. Accounts of 646 species include shape and arrangement of leaves, height, color, bark texture, flowering season, and fruit. Clear, accurate drawings illustrate leaves, flowers, buds, tree silhouettes, and other characteristics.

Peterson Field Guide To Birds Of Eastern And Central North America

Autor: Roger Tory Peterson
Publisher: Houghton Mifflin Harcourt
ISBN: 9780547152462
File Size: 21,12 MB
Format: PDF
Read: 1823
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Presents illustrations and detailed descriptions of the most common species of birds found in the eastern and central areas of North America, with advice on bird identification and maps indicating the range of each species.

Peterson Field Guide To Bird Sounds Of Eastern North America

Autor: Nathan Pieplow
Publisher: Houghton Mifflin Harcourt
ISBN: 0547905602
File Size: 62,72 MB
Format: PDF, Docs
Read: 4487
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The first comprehensive guide to the sounds of eastern North American birds, featuring an innovative visual index that allows readers to quickly look up unfamiliar sounds in the field.​ Bird songs and calls are just as important as visual field marks in identifying birds. But until now, the only way to learn them was by memorization. With this groundbreaking book, it’s possible to visually distinguish bird sounds and identify birds using a field guide format. At the core of this guide is the spectrogram, a visual graph of sound. With a brief introduction to five key aspects—speed, repetition, pauses, pitch pattern, and tone quality—readers can learn to visualize sounds, without any musical training or auditory memorization. Picturing sounds makes it possible to search this book visually for a bird song heard in the field. The Sound Index groups similar songs together, narrowing the identification choices quickly to a brief list of birds that sound alike. Readers can then turn to the species account for more information and/or listen to the accompanying audio tracks available online, through Cornell's Lab of Ornithology. Identifying birds by sound is arguably the most challenging and important skill in birding. This book makes it vastly easier to master than ever before.

A Field Guide To Mexican Birds

Autor: Roger Tory Peterson
Publisher: Houghton Mifflin Harcourt
ISBN: 9780395975145
File Size: 47,18 MB
Format: PDF, Kindle
Read: 2522
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Describes the calls, range, and male and female markings of more than one thousand species

A Field Guide To Southeastern And Caribbean Seashores

Autor: Eugene H. Kaplan
Publisher: Houghton Mifflin Harcourt
ISBN: 9780395975169
File Size: 55,87 MB
Format: PDF, Mobi
Read: 5617
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With more than 750 illustrations, including 300 color photographs, this guide covers more than 1,000 species, such as shoreside plants, clams, shrimps, crabs, corals, seaweeds, sponges, and sea urchins, as well as all of the common seashore communities found from Cape Hatteras to the Gulf Coast, Florida, and the Caribbean.