00000nam a2200000 a 4500 .b2937571 ES-BaCBU 20260520184500.0 030509s1995 xxua || 000 ||eng|c es-CRAI p1 TX EP 9/2 CRE España. Biblioteca Universitat de Barcelona MANES 89271 89271 1561078069 1561078069 0754-19960 ES-BaUB cat ES-BaUB Ward, Sandra 32034 Number combinations / Sandra Ward Chicago (Ill.) : Creative Publications, cop. 1995 103 p.: il.; 28 cm España MATE PRI Constructing ideas about. Grades 1-3 32036 ddc BK manes:89271 89271