TY  - BOOK
AU  - Zimmermann Erich W
AU  -  Hunker Henry L Ed.
TI  - Introduction to world resources
U1  - "X:27.1.N6, K4-;2/TD3" 
PY  - 1964///
CY  - New
PB  - York Harper & Row USA   
N1  - Bibliography at the end of each chapters
ER  -