檢索結果 - "Problems of Planning."

Problems of Long-term Planning in the German Democratic Republic / 由 Engert, Manfred

主題: “...Problems of Planning....”

problems of planning of full employment for labour force and supply of the qualified labour force for the country's national economy : according to the experience of the u.s.r. / 由 zabelin, n.

主題: “...problems of planning....”