D01C   1/00		ʪν	Treatment of vegetable material	1278
D01C   1/02		ݤκμ򲽳ŪˡˤäƹԤ	by chemical methods to obtain bast fibres	1825
D01C   1/04		ٶݻѤο	Bacteriological retting	586
D01C   3/00		ưʪν㡥ŪӡΣ	Treatment of animal material, e.g. chemical scouring of wool	1202
D01C   3/02		Խʪν	De-gumming silk	603
D01C   5/00		ưʪݺΤΥܥӤúΣ	Carbonising rags to recover animal fibres	255
