"heller, robert . "
effective leadership: / robert.. heller - ed. - london : dorling kindersley 1999. - ", 72p.; 18 cm." - essential managers .
978-0-7513-0767-2
--
658. 409 2 hel
effective leadership: / robert.. heller - ed. - london : dorling kindersley 1999. - ", 72p.; 18 cm." - essential managers .
978-0-7513-0767-2
--
658. 409 2 hel