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1Published 1967“...QC 971.7 .A6 .B429 1967...”
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2Published 1969“...QC 830 .A6 .B429 1969...”
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4by Cabes, L. (Lucien), 1907-“...QC 830 .A6 .C114 1968...”
Published 1968
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10by Stelling, C. (Cornelis)“...QC 879.59 .A6 .S824 1970...”
Published 1970
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