xxxii, 616 p., [3] leaves of plates : ill., maps, ports. ; 21 cm
Notes
Maps on end papers
"Authorised by the Minister of Education for use in the high schools and collegiate institutes of Ontario, and by the Advisory Board for use in Manitoba"
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