Manual of the botany of the Northern United States /

by Gray, Asa 1810-1888
Published 1856

Manual of the botany of the northern United States : including the district east of the Mississippi and north of North Carolina and Tennessee, arranged according to the natural sys...

by Gray, Asa 1810-1888
Published 1872

Gray's manual of botany : a handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada /

by Gray, Asa 1810-1888
Published 1908

Darwiniana : essays and reviews pertaining to Darwinism. /

by Gray, Asa 1810-1888
Published 1963

Darwiniana: essays and reviews pertaing to Darwinism

by Gray, Asa, 1810-1888
Published 1963