... The influence of modern man on the vegetation of Yosemite Valley. ROBERT P. GIBBENS, HAROLD F. HEADY.

... The influence of modern man on the vegetation of Yosemite Valley. [Berkeley]: University of California, Division of Agricultural Sciences, [1964]. 22.5 cm, pp. [1-2], 1-44 [45-46: blank] [note: last leaf is a blank], 43 illustrations, 7 tables, 2 maps, pictorial wrappers, stapled. First edition. The first printing with "July, 1964" on the contents page and printer's code "2m-7,'64 (E5202L) V.L" and "Allied Printing" slug on page 44. A comparison of the present vegetation of Yosemite Valley with that existing in the 1850s and 1860s as depicted in early writings and photographs. Analyzes changes, both man-made and natural, which have occurred since then, including the eradication of species of small plants in heavily used areas and the increase in forest cover throughout the Valley. Reproduces early photographs of the Valley and similar views taken in recent years. Issued as "California Agricultural Experiment Station Extension Service Manual 36." Hint of tanning to front cover, a fine copy. (#138991).

Printing identification statement for this book:
The first printing has "July, 1964" on the contents page and printer's code "2m-7,'64 (E5202L) V.L" and "Allied Printing" slug on page 44. An offset reprint made in 1975 by the Yosemite Natural History Association has "First Printed July, 1964" on the contents page; it retains the original printing code on page 44 but lacks the "Allied Printing" slug.