TY  - BOOK
AU  - Avery, T. Eugene
TI  - Foresters guide to aerial photo interpretation
U1  - R 634.929982 21st ed.
PY  - 1966///
CY  - Washington, D.C.
PB  - U.S. Governement Printing
KW  - Aerial photography in forestry-Handbooks, manuals, etc
ER  -