Pennsylvanian underclays: potential bonding clays for use in foundries.

Murray, Haydn H. 1924-

Pennsylvanian underclays: potential bonding clays for use in foundries. - Bloomington, 1957. - 27 p.

"Literature cited": p. 27.

gs 58000173


Clay--Indiana.

QE109 / .A3 no. 11

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