"Science." . . "Physics." . . "Natural Science Disciplines." . . "Science Early works to 1800." . . "Montreal Veterinary Medical Association," . . . . "Philosophy." . . . . . . . "The Economy of nature explained and illustrated on the principles of modern philosophy, by G. Gregory" . . . . "The economy of nature explained and illustrated : on the principles of modern philosophy. By G. Gregory"@en . . . . . . . . . . . . . . . . "The Economy of Nature Explained and Illustrated on the Principles of Modern Philosophy" . . . . . . . . . . . "The economy of nature explained and illustrated on the principles of modern philosophy" . "The economy of nature explained and illustrated on the principles of modern philosophy"@en . . . . . . . "The economy of nature : explained and illustrated on the principles of modern philosophy"@en . . . . . "The economy of nature explained and illustrated : on the principles of modern philosophy" . . . . . . . . . "Early works"@en . . . "The economy of nature [microform] : explained and illustrated on the principles of modern philosophy" . "The Economy of Nature explained and illustrated on the Principles of Modern Philosophy" . . "Philosophy Early works to 1800." . .