National Academy of Engineering & Uman, M. F. (1993). Keeping pace with science and engineering: Case studies in environmental regulation. National Academy Press.
Dyfyniad Arddull ChicagoNational Academy of Engineering and Myron F. Uman. Keeping Pace with Science and Engineering: Case Studies in Environmental Regulation. Washington, D.C.: National Academy Press, 1993.
Dyfyniad MLANational Academy of Engineering and Myron F. Uman. Keeping Pace with Science and Engineering: Case Studies in Environmental Regulation. National Academy Press, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.