机读格式显示(MARC)
- 000 00734nas a2200241 4500
- 008 990421c19969999enkwrzp ^ 0uuu 0eng d
- 099 __ |a CALB121999031637
- 245 00 |a Engineering patents index. alerting abstracts bulletin, |n Q5A : |p Engines, Pumps
- 260 __ |a London, UKN : |b Derwent information, |c c1996-
- 500 __ |a Description ased on : no.9701 (1997)
- 780 00 |t General & mechanical patents index. alerting abstracts bulletin, Q5-Q7 : mechanical engineering