Porwit, Kazimierz Selected topics on perspective planning in Poland / Kazimierz Porwit, Wladyslaw Rogozinski, Kazimierz Secomski. - Warsaw : Central School of Planning and Statistics , 1970 - 70 p. : ill. ; 25 cm. - Advanced course in national economic planning . Includes bibliographical references and index. Subjects--Topical Terms: PlanningEconomic policy Dewey Class. No.: 338.9 / POR-2