Two hard to find books from the Shell Chemical Corporation (Shell Oil & Gas).
Methyl Ethyl Ketone, 1952, 6 x 9 inches, 129 pages. Small ding-tear front cover. No writing.
Methyl Isobutyl Ketone, 1953, 6 x 9 inches, 98 pages. Some cover wear. No writing.
Inv37
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