TY  - BOOK
AU  - Allen, Shirley Walter
AU  - Leonard, Justi Wilkinson 
TI  - Conserving natural resources: principles and practice in a democracy 
U1  - 339.9 
PY  - 1966///
CY  - New York
PB  - McGraw Hill 
KW  - Economics of Land and Energy / Natural Resources and Energy
ER  -