ROSS FELTON 555,470 MCMAHON ROSEMARY, BARTON ELIZABETH,PIOT MAURICE On being in charge s 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. : il. / 24 cm ISBN 92-4-154148-2