549,393 OPERATIONS Operations research : Helping family planning programs work better : Proceedings of an International Conference and Workshop on Using Operations Research to Help Family Playnning Programs Work Better, Held in Columbia Maryland, June 11-14, 1990 /eds. Myrna Seidman, Marjorie C. Horn. - New York [etc.] : A John Wile" and Sons, Inc., Publ., [1991]. - XVI, 561 s. : wykr. ; 25 cm (Progress in clinical and Biological Research ; vol. 371) ISBN 0-471-56161-4