000 00395nam a22001577a 4500
999 _c178805
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008 231117b ||||| |||| 00| 0 eng d
041 _aEN
082 _223
_a614
_bVID
100 _eaut
245 _aviva in preventive and social medicine
_b:hygiene and public health
260 _aDelhi
_bjaypee brothers
_c1978
300 _a111 p.
509 _aNS
942 _cS