TY - BOOK T1 - Principles of secondary education A1 - Bent, Rudyard K. A2 - Kronenberg, H. H. PP - New York PB - McGraw-Hill Book Co. YR - 1941 UL - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.26594 OP - 594 ER -