by Robert William Hegner
Publisher: MacMillan 1915
Number of pages: 528
This book is intended for the use of students in secondary schools. The word "practical" in the title has been chosen since an effort has been made to present those facts and theories about animals which will have the most practical bearing upon the daily life of the student. It refers not alone to the economic side of the subject but also to the elements that are of greatest intellectual value.
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by Milad Manafi - InTech
Artificial insemination is used for reproduction purposes and its chief priority is that the desirable characteristics of a male livestock animal can be passed on more quickly and to more progeny than if that animal is mated in a natural fashion.
by George Joyce Olin - Southwest Parks and Monuments Association
This book describes mammals of the Southwest which live in the life zones above the low desert. The book is divided into hoofed animals, rodents, and carnivores. Includes finely executed black-and-white drawings and distribution maps.
by B. J. Le Beouf , R. M. Laws - University of California Press
This discussion of elephant seals brings together worldwide expertise from scientists who describe recent research, the history and status of various populations, and other findings obtained with the help of modern instruments.
by Samuel J. Holmes - P. Blakiston's son & co.
This volume is intended as an introduction to the elements of animal biology for the use of students in the high school. The order in which the main topics are treated is essentially like that which is followed in several of the best recent textbooks.