Problemi na obrazovanieto i vŭzpitanieto po opazvane na okolnata sreda
By: sŭstaviteli Zdravka Kostova, Khristo Khristov, Ivan Petrov.
Contributors: Kostova, Zdravka.
Publisher: Nauchnoizsledovatelski in-t po obshto obrazovanie "T. Samodumov", Komitet po opazvane na prirodnata sreda pri Ministerskii͡a︡ sŭvet
Published: 1983
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 127