00434nam a2200133Ia 4500008004100000040001700041082002500058100003000083110003000113245006500143260004100208300001500249650003600264190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta614.7061bI39R  aGupta, B C Das (Chairman)  aIndia. Ministry of Health 0aReport of the environmental hygiene committeecB C Das Gupta  aDelhibManager of Publicationsc1950  aiii, 208p.  aEnvironmental health; Poolution