The rule of three
Subtitle: not the rule of proportion, but a rule illustrating proportion, and a method of solution proposed, which does not require the use of proportion, with numerous examples
By: by the Rev. J. Cotterill.
Series: Arithmetic
Publisher: Longman, Brown, Green, and Longmans. Stevenson, Cambridge; and Fletcher, Norwich
Published: 1844
Place of publication: London
Language: eng
Number of pages: 65
Subjects: Arithmetic.; Proportion.