Trud - istochnik zhiznennykh blag
By: A.M. Dobrusin
Series: Novoe v zhizni, nauke, tekhnike. Serii︠a︡ Ėkonomika -- 8; Novoe v zhizni, nauke, tekhnike -- 8
Publisher: "Znanie"
Published: 1975
Place of publication: Moskva
Language: ukr
Number of pages: 61
Notes: Includes bibliographical references.