01245cam a2200301 i 45000010008000000030008000080050017000160080041000330100017000740400026000910430012001170500036001290820017001651000022001822450163002042600038003673000024004054400046004294900011004755040041004866500040005276500050005677000076006177100078006939420013007719990019007849520140008034144419BD-DhUL20201103141152.0771018s1974    th       b   i000 0 eng    a   77366353   aDLCcBD-DhULdBD-DhUL  aa-pk---00aJX1977b.A2 E/CN.11/1119aHQ76600a301.426bUNS1 aPotter, Robert G.10aSome techniques for measuring the impact of contraception /c[by Robert G. Potter and S. L. N. Rao] ; Economic and Social Commission for Asia and the Pacific.  aBangkok :bUnited Nations,c1974.  av, 136 p. ;c28 cm. 0aAsian population studies series ;vno. 181 ano. 18  aIncludes bibliographical references. 0aBirth controlxMathematical models. 0aBirth controlzPakistanxMathematical models.1 aRao, S. L. N.q(Sethuramaiah Lakshminarayana N.),d1942-ejoint author.2 aUnited Nations.bEconomic and Social Commission for Asia and the Pacific.  2ddccREF  c174364d174364  00102ddc406301_426000000000000_UNS718REF9310458aDULbDULcUNCd2017-04-09eGifto301.426 UNSpD7696r2017-04-09w2017-04-09yREF