TY  - BOOK
AU  - By Trivedi Ranjan, Priya
AU  - By K'Cherry Sudarshan
AU  - By Uttam Kumar Singh
AU  - By Tripat Kaur Tuteja
TI  - International Encyclopaedia of Ecology And Envronment, Volume 9: Research Methodology and Systems Anaysis
SN  - 81-7456-008-4
PY  - 1994///
CY  - New Delhi
PB  - Indian Institute of Ecology and Environment
ER  -