GELINA NAOMI 555,470 MCMAHON ROSEMARY, BARTON ELIZABETH, PIOT MAURICE On being in charge : a guide for middle-level management in primary health care / by Rosemary McMahonm, Elizabeth Barton and Maurice Piot ; in. collab. with Naomi Gelina and Felton Ross. - Geneva t World Health Organization, 1980. - [4], 366 s. t il. ; 24 cm ISBN 92-4-154148-2