http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
class II. genus XVIII, &c. - birds : with an appendix, an essay on birds of passage, and an index. 1768
1 online resource (1 volume (233-522, ix pages)) : illustrations (black and white).
"Detailed Description: Gray's own annotated copy."--Homepage.
Pembroke College, University of Cambridge