bk-1, k-1 sums to 20 Donofrio, Linda creator text xx Bothell, WA A Golden Educational Center Publication 1989 19uu monographic eng

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1 v. (unp.) ; ill. written by Linda Donofrio; Andrea Sholl. Math Study and Teaching Addition (sums to 20) Juvenile literature Subtraction (sums to 20) Juvenile literature TR(GS 513 DON bk. 1 020416 20140412111230.0