Barometrical observations on the depth of the mines in the Hartz. By John Andrew de Luc, F. R. S. Read at the Royal Society, March 20, 1777.

London : printed by W. Bowyer and J. Nichols, MDCCLXXVII. [1777]

[2],49,[1]p. ; 40.

ESTC T114107

Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. (Eighteenth century collections online). Available via the World Wide Web. Access limited by licensing agreements.