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C12 - Biochemistry; Beer; Spirits; Wine; Vinegar; Microbiology; Enzymology; Mutation or genetic engineering
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C12L - Pitching or depitching machines; Cellar tools
More topics under "C12L - Pitching or depitching machines; Cellar tools" (227)
C12L 11 - Cellar tools
(184)
C12L 3 - Pitching or depitching machines
(1)
C12L 9 - Venting devices for casks, barrels, or the like
(42)