RUCH, GILES M.
Standard service algebra. By Giles M. Ruch & F. B. Knight. NM: additions.
RUCH, GILES M. Standard service algebra. By Giles M. Ruch & F. B. Knight. NM: additions. © 14Jan37; A101924. Scott, Foresman & Co. (PWH); 24Dec64; R355525.
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