The united and much admired system of arithmetic and mental calculations of Doctor Willcolkes and Messrs. T. and T.W. Fryer : being the result of many years' study
Washington, D. C. : Farmer Cooperative Service, U.S. Department of Agriculture
Publisher Series
FCS information ; 49
Physical Description
[6] p. ; 23 cm
Notes
Cover title
A copy of each of these publications may be obtained upon request while a supply is available from Farmer Cooperative Service U.S. Department of Agriculture