Orton's lightning calculator
Subtitle: and accountant's assistant
By: by Hoy D. Orton.
Edition: Entirely new ed., with extensive modifications and improvements.
Publisher: H.D. Orton & Co.
Published: 1871
Place of publication: Philadelphia, Pa
Language: eng
Number of pages: 194
Subjects: Ready-reckoners.
Other titles: Theodore P. Hill collection of early American mathematics books.