Ngā hua rapu - "Problems of Planning."

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

Ngā marau: “…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. / mā zabelin, n.

Ngā marau: “…problems of planning.…”