Two grades arithmetic; book 1 with answers

书目详细资料
主要作者:	Lovell, K.
其他作者:	Smith, C. H. J.
格式:	图书
语言:	English
出版:	Bucks Londo Ginn & Co. c1975.
版:	rev. ed.
主题:	Arithmetic > Problems, Exercises, Questions. Mathematics > Study and teaching (Elementary).