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1著者: Roggema, J.### CRL customization ### ?> ### Add publisher and desc details ### ?>
出版事項 1969Assen, Van Gorcum, 1969.151 p. 23 cm.主題: “...Educational sociology....”
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2著者: Niederberger, Josef Martin### CRL customization ### ?> ### Add publisher and desc details ### ?>
出版事項 1984Stuttgart : F. Enke, 1984.viii, 188 p. : ill. ; 23 cm.主題: “...Educational sociology....”