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- 42021158 contributor B1010891.
- 42021158 created "1941.".
- 42021158 date "1941".
- 42021158 date "1941.".
- 42021158 dateCopyrighted "1941.".
- 42021158 extent "61, [2] p. :".
- 42021158 isPartOf "Biblioteca del maestro Costarricense ; 1".
- 42021158 issued "1941".
- 42021158 issued "1941.".
- 42021158 language "spa".
- 42021158 publisher "San José, Costa Rica : Librería Lehmann,".
- 42021158 subject "Education Experimental methods.".
- 42021158 subject "Education.".
- 42021158 subject "Educational psychology.".
- 42021158 subject "LB1027 .G33".
- 42021158 title "Metodología de los centros de interés.".
- 42021158 type "text".