TY  - BOOK
AU  - Chitkara, M.G, 
TI  - Encyclopaedia of ecology, environment and pollution: vol.vi-science, technology and environment / 
SN  - 81-7024-880-9
U1  - 577.03 
PY  - 1998///
CY  - New Delhi
PB  - APH Publishing
KW  - Ecology-Encyclopaedias
KW  - Environment-Encyclopaedias
KW  - Pollution-Encyclopaedias
N1  - Includes index
ER  -