00837nam a2200253Ia 4500 85717 BIBL 20201023062750.0 910710s1957 fr a b i000 0 spa d (OCoLC)24048228 GZN GZN spa eng PUXA LB1050 .G7316x Gray, William S. (William Scott) 105369 Local La enseñanza de la lectura y de la escritura un estudio internacional por William S. Gray. [Paris] UNESCO [c1957] 324 p. illus. Monografías sobre educación fundamental 10 Translation of: The teaching of reading and writing. Includes bibliographical references. Reading (Elementary) 157316 Penmanship 149036 Local 69655 69655 0 0 0 372_400000000000000_G783 0 evl 366169 10 10 1 2016-05-27 136276 0 372.4 G783 80000000585367 2016-05-27 00:00:00 r:85717 z:NCC:D 6