Multi-volume work
	Gray, S.F.
		1821. A Natural Arrangement of British Plants, according to their relations to each other, as pointed out by Jussieu, De Candolle, Brown, &c. including those cultivated for use; with An Introduction to Botany, in which the terms newly introduced are explained; Illustrated by Figures. Baldwin, Cradock, and Joy, London: 2 vols..
	 ≡
Volumes
	- 
		Gray, S.F., 1821a.
			Vol. I: [i]-xxviii, [1]-824, 21 pls..
	
- 
		Gray, S.F., 1821b.
			Vol. II: [i]-viii, [1]-757.
	
New: Subsequent rank