Yazar
Robert Larry Grayson
10 cilt bulundu.
Cilt sonuçları
Correlation of Respirable Dust Characteristics to Coal Seams
Robert Larry Grayson, Generic Mineral Technology Center for Respirable Dust, West Virginia University. Department of Mining Engineering · Yayınevi bilinmiyor
6 sayfa · 1990
Coal mines and mining
Mining Publication List
National Institute for Occupational Safety and Health, Robert Larry Grayson · Yayınevi bilinmiyor
33 sayfa · 1999
Coal mines and mining
A Paleoscatological Study of Diet and Disease at Dirty Shame Rockshelter
Richard C Hanes, C. Melvin Aikens, Donald K. Grayson, H. J. Hall, J. M. Adovasio, Larry D. Agenbroad, Laurence R. Kittleman, Robert L. Bettinger, Steven J Fox, Susan Condie · Yayınevi bilinmiyor
29 sayfa · 1976
Buffalo jump