Clark A F Proceeding of nonmetallic materials and composites at low temperatures Clark A F; Hartwig G - New York Plenum Press 1979 - xvi,439p. cm. ill - Cryogenic materials series . Standard No.: 45557 Source: Textual Subjects--Topical Terms: Nonmetal Dewey Class. No.: E195:3,Dp1,N78, L9