Kratki upŭtvanii͡a︡ i primeri za izchisli͡a︡vane ikonomicheskii͡a︡ efekt na vnedreni izobretenii͡a︡, rat͡s︡ionalizat͡s︡ii i ikonomicheski efektivni predlozhenii͡a︡
By: Todor G. Konstantinov.
Publisher: In-t za izobretenii͡a︡ i rat͡s︡ionalizat͡s︡ii; T͡S︡entr. sŭvet po organizat͡s︡ii͡a︡ na tekhn. tvorchestvo
Published: 1978
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 50
Subjects: Technological innovations -- Economic aspects -- Problems, exercises, etc.