Multi-volume work
	Sowerby [I], G.B.
		[1821-1834]. The Genera of Recent and Fossil Shells, for the use of students in Conchology and Geology. G.B. Sowerby, London: 42 parts / 2 vols..
	 [pls. by J. Sowerby (vide Petit, 2006: 72); originally neither the plates nor the text were numbered (vide Petit, 2006: [71])] ≡
Remarks
	
		| Source for the date of effective publication | 
			Ref: 
				
					R.E. Petit, 2006: App. 1 (pp. 86-87).
			 | 
		
	
	Volumes
	
		- 
			Sowerby, G.B., [I], [1821-1834].
				Vol. 1, Text.
		
 
		- 
			Sowerby, G.B., [I], [1821-1834].
				Vol. 2, Plates.