TY  - BOOK
AU  - Parker,Sybil P.
TI  - Mcgraw-hill encyclopedia of environmental science
SN  - 0070452644
AV  - QH540.4 M34 1980
PY  - 1980///
CY  - New York
PB  - McGraw-Hill
KW  - Ecología
KW  - Diccionarios
KW  - Protección ambiental
KW  - Seres humanos
KW  - Efectos ambientales
N1  - "some of the material in this volume has been published previously in the mcgraw-hill encyclopedia of science and tecynology, fourth editon"
ER  -