Arafa,Said Mohamoud. Accounting information for planning and control models: the case of pert and critical path method [[Thesis] /] Said Mohamoud Arafa . - 1970. - 315 p ; 30cm . Thesis(Ph.D)--California University,1970. includes bibliography ( 303-309) . All age. Dewey Class. No.: 657 National Library of Medicine Call No.: 657 / AA