00869nam a2200265Ia 4500 232149 BIBL 20160527202235.0 860528s1990 mx a 001 0 spa d 9682436931 (OCoLC)13650231 TXP TXP PUED 378.1794 H4201m Heredia Ancona, Bertha. Local 109958 Manual para la elaboración de material didáctico Bertha Heredia Ancona. 2. ed. México Editorial Trillas 1990 (1995 printing) 176 p. ill. 23 cm. Includes bibliographical references (p. 171) and index. Teaching Aids and devices. Local 177322 Education, Higher LEMB 44383 Individualized instruction Local 114380 Open plan schools Local 145193 172705 172705 0 0 ddc 0 378_175400000000000_H542M2 0 l 345993 1 1 17 2016-05-27 328832 0 378.1754 H542m2 60000002011598 2016-05-27 00:00:00 r:232149 6