Individualna i kolektivna trudova deĭnost
By: Nikolaĭ Nikolov.
Edition: 1. izd.
Series: Serii͡a︡ "Interesi, stimuli, trudova aktivnost"
Publisher: Izd-vo "Khristo Botev"
Published: 1990
Place of publication: Sofia
Language: bul
Number of pages: 126