TY  - GEN
AU  - Laptev,Ivan Dmitrievich
TI  - The planet of reason : : a sociological study of man-nature relationship / 
AV  - GF50 
U1  - 301.31 
PY  - 1977///
CY  - Moscow : 
PB  - Progress Publishers
KW  - Human ecology
KW  - Nature
KW  - Pollution
KW  - Effect of human beings on
N1  - Translation of Planeta razuma; Includes bibliographical references
ER  -