Journal volume

Hemming, F. 1958-1959. Volume 19. Ops. Decls. int. Comm. zool. Nomencl.: [I]-XII, [i]-xxxviii, [1]-436, [(i)]-(xiv). ≡

Journal issues

1. Hemming, F. (ed.), 1958. Volume 19. Part 1. Pp. 1-44. Opinion 516, 16 May 1958: [1]-44.
2. Hemming, F. (ed.), 1959. Volume 19. Part 23, 20 Mar 1959: [I]-XII, 395-436.