Bird migration in the Americas /
National Geographic Society (U.S.).Cartographic Division.
Darley, Richard J.
Shupe, John F.
Dorr, John F.
Teringo, J. Robert.
Wahll, Andrew J.
National Geographic Society (U.S.).Cartographic Division.Americas.
Washington : The Society,
c1979.
Scale 1:20,000,000;
Relief shown by shading.
"Supplement to the National Geographic, August 1979, page 154A, vol. 156, no. 2--Bird migration."
Includes text, indexed map of "Ocean migrants," indexed col. ill. of birds, and index of birds by type.
On verso: The Americas, 1:20,000,000.--Physical map of the Americas, 1:55,870,000.
Bartholomew firm library.
Birds