The Pennsylvanian Fire Clay tonstein of the Appalachian basin : Its distribution, biostratigraphy, and mineralogy discussion and reply
Outerbridge, William
The Pennsylvanian Fire Clay tonstein of the Appalachian basin : Its distribution, biostratigraphy, and mineralogy discussion and reply
bibliogr. p. 124-125
00167606
The Pennsylvanian Fire Clay tonstein of the Appalachian basin : Its distribution, biostratigraphy, and mineralogy discussion and reply
bibliogr. p. 124-125
00167606