TY  - BOOK
AU  - Allen,Shirley Walter
TI  - Conserving natural resources
U1  - 333.72 ALL L;1 
PY  - 1955///.
CY  - New York : 
PB  - McGraw Hill Book Company, 
KW  - Conservation of natural resources
KW  - Natural resources
N1  - Includes index
ER  -