Water quality surveys :
543.3WAT
Water quality surveys : a guide for the collection and interpretation of water quality data / .- Paris:Unesco ,1978.
350p. :ill.;23cm(Hb)
Note: Includes bibliographical reference
ISBN:9231014730 Rs. 00.00
Cen Lib/Ret /920062/ 920062 / 0.00 /sign
