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Inheritance of melanophore patterns and sex determination in the Montezuma swordtail, Xiphophorus montezumae cortezi Rosen

Published in Zoologica, in 1972, in volume 56, issue 3, pages 77-94

On the resemblance of the young of the fishes Platax pinnatus and Plectorhynchus chaetodontoides to flatworms and nudibranchs

Published in Zoologica, in 1972, in volume 56, issue 5, pages 115-119

Chromosome numbers of heliconne butterflies from Trinidad, West Indies (Lepidoptera, Nymphalidae)

Published in Zoologica, in 1972, in volume 56, issue 6, pages 121-124

The genetics of some polymorphic forms of the butterflies Heliconius melpomene (Linnaeus) and H. erato (Linnaeus). II. The hybridization of subspecies of H. melpomene from Surinam and Trinidad

Published in Zoologica, in 1972, in volume 56, issue 7, pages 125-157

News and Notes: Underwater sounds of southern right whales

Published in Zoologica, in 1972, in volume 56, issue 7, pages 159-165

The heliconians of Brazil (Lepidoptera: Nymphalidae). Part II. Introduction and general comments, with a supplementary revision of the tribe

Published in Zoologica, in 1972, in volume 57, issue 1, pages 1-40

The heliconians of Brazil (Lepidoptera: Nymphalidae). Part III. Ecology and biology of Heliconius nattereri, a key primitive species neat extinction, and comments on the evolutionary development of Heloconius and Eueides

Published in Zoologica, in 1972, in volume 57, issue 2, pages 41-69