The economy of nature explained and illustrated on the principles of modern philosophy. By G. Gregory, ... In three volumes. With forty-six plates. ...
Gregory, G.(George),1754-1808.
London : printed for J. Johnson,
1796.
ESTC
Also reproduced on microfilm. Woodbridge, CT: Research Publications, Inc., 1986. The Eighteenth Century ; reel 2234, no. 1.