00558nam a2200181Ia 4500 82822 BIBL 20180810021829.0 920814|1975||||mx |||||||||||00010|spa|d Ballesteros, Antonio 5262 LEMB Organización de la escuela primaria por Antonio Ballesteros y Usano 10. ed. México Editorial Patria 1975 452 p. Bibliography : p. 443 School management and organization Local 166435 Education of Children 90441 Local 66993 66993 0 0 ddc 0 372_241000000000000_B191O_1975 0 evl 359868 10 10 1 2016-05-27 132535 0 372.241 B191o 1975 80000002057167 2016-05-27 00:00:00 r:82822 z:NCC:D 6