000			00507nam a2200181 4500
020			_a _c
082			_aR 628.03 PFA-E.2
100			_aPfafflin, J R, Ed.; Ziegler, E N, Ed.
245			_aEncyclopaedia of environmental science and engineering, Vol.2: N to Z
250			_a
260			_aGordon & Breach Science Publishers, New York _c1976
300			_a1091
490			_a
500			_a
590			_apriya _b2011-03-30 10:59:31 _c
650			_aEnvironmental Science- Encyclopaedia
942			_cBK
999			_c232750 _d232750