000			00428naa a22001457c 4500
001			8805
003			OSt
005			20190814161053.0
007			t|
008			190702s xxu||||| |||| 00| 0 d
100	1		_aWittmann, Alfred
245	0	0	_aClassifying and Indexing of Patent Documents : _ba Retired Patent Documentalist Looks Back
650			_aInternationale Patentklassifikation _92098
773	0		_aWPI. 16(1994),4,233-235. _wz_WPI
999			_c5515 _d5515