Grasslands : a symposium presented at the New York meeting of the American Association for the Advancement of Science, December 27-30, 1 956 / Edited by Howard B. Sprague. - Washington , 1959. - xv, 406 p. : ill., map ; 24 cm. - Its Publication ; no. 53. .

Includes bibliographical references.


Pastures.
Grasses.

633.2082