机读格式显示(MARC)

• 000 00785cas a2200229 4500

• 001 0000223312

• 003 CAL

• 005 20130427095900.0

• 008 931117c19919999enkwr p 0 a0eng d

• 040 __ |a PUL |c PUL

• 090 __ |a (E)/TQ/13

• 093 __ |a TQ |2 5

• 099 __ |a CAL 121999001660

• 245 00 |a Chemical patents index, alerting abstracts bulletin (classified). |n H, |p Petroleum.

• 246 03 |a Chemical patents index. H, Petroleum.

• 260 __ |a London : |b Derwent Publications Ltd., |c 1991-

• 300 __ |a v. : |b ill. ; |c 29cm.

• 310 __ |a Weekly

• 362 __ |a 1991, no. 1 (Feb. 1991)- .

• 500 __ |a Patents abstracts from 33 countries.

• 650 _0 |a Petroleum chemicals |x Patents |x Indexes |v Periodicals.

• 780 00 |t Chemical patents index, classified alerting bulletin. H, Petroleum. |w s97-2843