Spravochnik izobretateli͡a︡ i rat͡s︡ionalizatora
Subtitle: voprosy i otvety
By: N.V. Bezsonov.
Publisher: Profizdat
Published: 1983
Place of publication: Moskva
Language: rus
Number of pages: 254
Subjects: Inventions -- Soviet Union -- Handbooks, manuals, etc.; Technological innovations -- Soviet Union -- Handbooks, manuals, etc.