TY  - BOOK
AU  -  Kumar, J. Prasanth.
AU  - edited by Rao,Digumarti Bhaskara.
TI  - Environmental measurement : : concept & approach 
SN  - 8171414370
PY  - 1998///
CY  - New Delhi
PB  -  Discovery Pub. House, 
KW  - Distance education -- India -- Andhra Pradesh
N1  - Includes bibliographical references  and index
ER  -