The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

The European Bibliography of Slavic and East European Studies (EBSEES) collects books, journal articles, reviews and dissertations from Eastern Europe (former countries of Eastern Bloc) which were published in Belgium, Germany, Finland, France, Great Britain, the Netherlands, Austria and Switzerland from 1991 to 2007. The segment "Literature" and "Culture" of the European Bibliography of Slavic and East European Studies contains 18.000 bibliographic entries (from the total asset of 85.000). More information can be found here.

Your search for Butler, William E. provides 4 hits
1	The Soviet multinational state: readings and documents Armonk, NY, M.E. Sharpe, 1990, 603 p
2	Civil Code of the Republic Kazakhstan: General Part adopted by the Supreme Soviet on 27 December 1994 London, White & Case 247, 1995
3	The Customs code of the USSR, and The Law on the customs tariff of the USSR London, Interlist, 1991, xxvi+210 p
4	The new Soviet Law on the Press Butler, W.E., in: Solanus, 5, 1991, p. 167-76

The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

The Soviet multinational state: readings and documents

Civil Code of the Republic Kazakhstan: General Part adopted by the Supreme Soviet on 27 December 1994

The Customs code of the USSR, and The Law on the customs tariff of the USSR

The new Soviet Law on the Press