Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Grytz, Inge and Wolter, Maja and Brandt, B. and Serner, K.",Мы говорим по-русски,Ausg. 1971,Volk und Wissen,1971,,,,,https://cir.nii.ac.jp/crid/1130000795371200384