Product Description: Revised edition: 1924 (note: images are not included in this eBook.) Notice: This Book is published by Historical Books Limited (www.publicdomain.org.uk) as a Public Domain Book, if you have any inquiries, requests or need any help you can just send an email to publications@publicdomain...read more

Product Description: Relativity: The Special and General Theory Albert EINSTEIN (1879 - 1955), Translated by Robert W. Lawson (1890 - 1960) This is an introduction to Einstein’s space-bending, time-stretching theory of Relativity, written by the master himself...read more

Product Description: The present book is intended, as far as possible, to give an exact insight into the theory of Relativity to those readers who, from a general scientific and philosophical point of view, are interested in the theory, but who are not conversant with the mathematical apparatus of theoretical physics...read more

MORE BIRDING BY EAR includes 96 species of birds found east of the Rockies, arranged in groups with similar vocalizations. Coverage includes 25 species of warblers and many shorebirds and water birds.

Product Description: With this audio guide, you can learn to identify your favorite birds by their songs and calls alone. Backyard Bird Song includes 28 of the most common backyard birds, such as the American Robin, the Song Sparrow, and the Downy Woodpecker, arranged in groups with similar vocalizations...read more

Birding by Ear is a unique and important new tool for birders. Now they can easily master one of the most useful and difficult field skills - the ability to recognize birds by their songs and calls. Birding By Ear points out exactly what to listen for to tell one bird from another. As the Peterson Field Guide groups birds by visual similarity, Birding by Ear groups them by acoustic similarity. Dick Walton and Bob Lawson have arranged eighty-five common species into seventeen intelligible learning groups, such as "whistlers," "chippers and trillers," "name-sayers," and "mimics." The entertaining and educational narrative does the same job as the arrows in the Peterson Field Guide to Eastern Birds, pinpointing the precise differences between similar species. The songs themselves are recorded to the highest acoustic standards and are a delight to listen to. Birding by Ear can enable anyone to become a better birder. Use it in conjunction with the Peterson Field Guide to Bird Songs, which provides a thorough catalog of the songs and calls of the familiar birds of eastern and central North America (a Field Guide to Western Bird Songs is also available). Birding by Ear may well become as essential to you as your Field Guide and binoculars.

Product Description: Birding by Ear: Western is a unique and important new tool for birders. Now they can master one of the most useful and difficult field skills - the ability to recognize birds by their songs and calls. Birding By Ear: Western points out exactly what to listen for to tell one bird from another...read more

Product Description: Birding by Ear: Western is a unique and important new tool for birders. Now they can master one of the most useful and difficult field skills - the ability to recognize birds by their songs and calls...

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Product Description: 3 cassettes plus book - Factory Sealed - Next-day shipping - Tracking Number

Product Description: Birding by Ear is a unique and important new tool for birders. Now they can easily master one of the most useful and difficult field skills - the ability to recognize birds by their songs and calls. Birding By Ear points out exactly what to listen for to tell one bird from another...read more

Product Description: Birding by Ear is a unique and important new tool for birders. Now they can easily master one of the most useful and difficult field skills - the ability to recognize birds by their songs and calls. Birding By Ear points out exactly what to listen for to tell one bird from another...read more