Ready-reckoners -- Early works to 1900 : Howard's Anglo-American art of reckoning : the standard teacher and referee of business arithmetic for the use of schools and business colleges ; a manual for the counting house & self culture / C. Frusher Howard
1885
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Ready-reckoners -- Tables. : Matheson's Australian saw-millers' complete log and timber ready reckoner ... / by D. Matheson
