Digitizing procedure for the National Coal Resources Data System of the U.S. Geological Survey
Judy F. Hunter
◽
Sharon S. Crowley
◽
Antoinette L. Medlin
1976 ◽
Vol 2
(3)
◽
pp. 331-340
◽
Edwin Wilson Tooker
◽
George Wong
Maureen G. Sherlock
◽
Joseph V. Tingley
R. D. Merritt
◽
G. R. Eakins
◽
K. J. Johnson
John P. Nawyn
◽
B. Pierre Sargent
◽
Barbara Hoopes
◽
Todd Augenstein
◽
Kathleen M. Rowland
◽
...