TY  - BOOK
AU  - Belloli,Robert C
TI  - Contemporary physical science: our impact on our world
SN  - 0023080701
U1  - 301.31 
PY  - 0000///د.ت
CY  - New York
PB  - Macmillan
KW  - Environmental protection
KW  - Human ecology
KW  - Natural resources
KW  - Pollution
N1  - Includes bibliographies and index
ER  -