All e-books of Sydney Anderson

INTRODUCTION A person standing on the North Rim of the Mesa Verde in southwestern Colorado sees a vast green plain sloping away to the south.

INTRODUCTION In the region including Wyoming and Colorado, _Microtus pennsylvanicus_ has been divided into two subspecies: the pale _M.

INTRODUCTION Didier (1943, 1954) has described the bacula of several Old World microtines, and other rodents.

The Grand Mesa of Colorado is a westward extension of the mountains of central Colorado, standing more than five thousand feet above the valleys of the Colorado and the Gunnison rivers.

Incidental to studies of speciation of North American mammals, made possible by assistance from the National Science Foundation and the Kansas University Endowment Association, a number of bats hav...

Tropical fruit-eating bats of the genus _Artibeus_ reach their northern limits on the lowlands of the eastern and western coasts of México.