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020 _a8171797857
082 _a614.44076
_bRAT
_223
100 _aRATAN, Vidya
245 _aViva in preventive and social medicine (hygiene and public health) /
_c[by] Vidya Ratan
250 _a4th ed.
260 _aNew delhi
_bJaypee
_c2000
300 _a143 p.
650 _aPreventive medicine
650 0 _a Social medicine.
_9122066
650 0 _aPreventive & social medicine questions.
_9122067
942 _cR