000 00292nam a2200109Ia 45e0
008 181001s1971 xx 000 0 und d
100 _aBedi Y.P.
245 0 _aHygiene public health
260 _aDelhi
_bAtma Ram
_c1971
300 _a526
942 _2ddc
_cBK
999 _c1859
_d1859