000 00250 a2200109 4500
020 _a8174731709
050 _aRA425
_bR11
100 _lEnglish
_qRoa B Sridhar.
245 _aPrinciples of Community Medicine
260 _aDelhi
_bAITBS
_c2015
942 _2lcc
999 _c274
_d274