TY  - BOOK
AU  - Critchfield,William Burke
AU  - Little,Elbert L.
TI  - Geographic distribution of the pines of the world
T2  - Miscellaneous publication / United States Department of Agriculture
AV  - S21 .A46 no. 991
U1  - 634.9/751 
PY  - 1966///
CY  - Washington, D.C.
PB  - U.S. Dept. of Agriculture, Forest Service
KW  - Pine
KW  - Geographical distribution
N1  - Cover title; Includes index; Bibliography: p. 21-29
ER  -