000 00550nam a2200145 a 4500
005 20190520021002.0
008 070912s19uu xx 00 eng d
100 1 0 _aMarshall, John, 1922-
245 1 0 _aThe infertile period :
_bprinciples and approach /
_cJohn Marshall.
260 0 _aBaltimore :
_bHelicon Press,
_cc1963.
300 _aviii. 118 p. : ill.
500 _aIncludes bibliography, appendices and index.
650 _aConception
_xPrevention
852 _7OLOPSC
999 _c33828
_d33828