00776nam a2200217Ia 4500001000700000003000500007005001700012008004100029035002000070040001300090100002900103245005600132260004500188300002400233500001900257500010400276504004100380650005000421650005000471710003700521118532BIBL20160527184734.0891110r19611961nyua     b    000 0 eng d  a(OCoLC)20625153  aMDUcMDU1 aPotter, Robert G.2Local10aLength of the fertile periodcRobert G. Potter, Jr.  a[New YorkbMilbank Memorial Fundc1961?]  a31 p.bill.c23 cm.  aCaption title.  a"Reprinted from The Milbank Memorial Fund quarterly, January 1961, vol. XXXIX, no. 1, pp. 132-162."  aIncludes bibliographical references. 0aMenstrual cycle.xMathematical models.2Local 0aFertility, HumanxMathematical models.2Local20aMilbank Memorial Fundw1n2Local