sack, K., & linsel, h. (1966). planning of technical progress in industry: Planning of temporal progress of research and development. the institute of national planning.
Dyfyniad Arddull Chicagosack, Kurt, and hermann linsel. Planning of Technical Progress in Industry: Planning of Temporal Progress of Research and Development. cairo: the institute of national planning, 1966.
Dyfyniad MLAsack, Kurt, and hermann linsel. Planning of Technical Progress in Industry: Planning of Temporal Progress of Research and Development. the institute of national planning, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.