Helsham, R. (1743). A course of lectures in natural philosophy: By the late Richard Helsham, ... Published by Bryan Robinson, M.D (The second edition.). printed for J. Nourse.
MLA CitationHelsham, Richard. A Course of Lectures in Natural Philosophy: By the Late Richard Helsham, ... Published by Bryan Robinson, M.D. The second edition. printed for J. Nourse, 1743.
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