The Arkansas coal field,
Collier, Arthur J. 1866-1939.
The Arkansas coal field, by Arthur J. Collier; with reports on the paleontology, by David White and G.H. Girty. - Washington, Govt. print. off., 1907. - vi, 158, viii, p. illus., VI pl. (incl. fold. map in pocket) diagrs. 24 cm. - U.S. Geological survey. Bulletin no. 326 .
gs 08000006
Coal--Arkansas.
Paleontology--Arkansas.
Paleontology--Carboniferous.
QE75 / .B9 no. 326
The Arkansas coal field, by Arthur J. Collier; with reports on the paleontology, by David White and G.H. Girty. - Washington, Govt. print. off., 1907. - vi, 158, viii, p. illus., VI pl. (incl. fold. map in pocket) diagrs. 24 cm. - U.S. Geological survey. Bulletin no. 326 .
gs 08000006
Coal--Arkansas.
Paleontology--Arkansas.
Paleontology--Carboniferous.
QE75 / .B9 no. 326