EBSEES: 3 hits for 1936-1939

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 1936-1939 provides 3 hits
1	Spain betrayed. The Soviet Union in the Spanish Civil War in: Cahiers Léon Trotsky, 2001, XXXIV-537 p.
2	"Manuskript, Parteibuch, trudoden', Fahrkarte: Geldsurrogate im sowjetischen Film 1936-39 Drubek-Meyer, Natascha, in: Kultur, Sprache, Ökonomie. Beiträge zur gleichnamigen Tagung an der Wirtschaftsuniversität Wien, 3.-5. Dezember 1999, Wolfgang Weitlaner (Hrsg.), 2001, pp. 165-200
3	La Unión soviética y la Guerra Civil española: una revisión crítica Kowalsky, Daniel, Barcelona, Crítica contrastes, 2003, XV-534 p.

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

Spain betrayed. The Soviet Union in the Spanish Civil War

"Manuskript, Parteibuch, trudoden', Fahrkarte: Geldsurrogate im sowjetischen Film 1936-39

La Unión soviética y la Guerra Civil española: una revisión crítica