The Process for extracting and refining salt-petre, according to the method practised at the Provincial Works in Philadelphia.
Subtitle: Published by order of the Committee of Safety.
Contributors: Provincial Works (Philadelphia, Pa.); Pennsylvania. Committee of Safety.
Series: Early American imprints -- no. 14827.
Publisher: Printed by William and Thomas Bradford, at the London Coffee House.
Published: 1776
Place of publication: Philadelphia
Language: eng
Format: Microform
Subjects: Saltpeter.
Notes: Evans 14827.

Hildeburn, C.R.  Pennsylvania, 3453.

Microfiche. [New York : Readex Microprint, 1985] 11 x 15 cm. (Early American imprints. First series ; no. 14827)