The Birmingham ready calculator; shewing in twenty tables, the sums necessary, from one shilling to fifty pounds, to produce real profits, from 2 1/2 to 50 per cent. on prime cost; after allowing discounts from 2 1/2 to 50 percent. on the selling prices. By C. Bernecker.
Bernecker, C.
Birmingham : printed by Pearson and Rollason; and sold by R. Baldwin, London,
1778.
ESTC