TY  - BOOK
AU  - Humphrey, robert R
AU  - 
TI  - Range ecology
U1  - 577.4(23:73) 
PY  - 1962///
CY  - New York
PB  - Ronald
KW  - Range ecology
KW  - Ecology
KW  - Environment
KW  - Biology
N1  -  Bibliog. P. 214-228
ER  -