Anonymous. By David Steel. Signatures: A-2F⁴ 2G². With an advertisement of 2G2 verso. Signatures and advertisement from RPJCB Reproduction of original from the Cambridge University Library. Available online to authorized PSU users as part of the Medicine, science, and technology series of Eighteenth century collections online.
Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. Available via the World Wide Web. Access limited by licensing agreements