A morphological study of Chaetoceros species (Bacillariophyta) from the plankton of the Pacific Ocean of MexicoPublished in Bulletin of the Natural History Museum. Botany series., in 1996, in volume 26, issue 1, pages 1-73Studies in the genus Hypericum L. (Guttiferae) 6. Sections 20. Myriandra to 28. ElodesPublished in Bulletin of the Natural History Museum. Botany series., in 1996, in volume 26, issue 2, pages 75-217
Studies in the genus Hypericum L. (Guttiferae) 6. Sections 20. Myriandra to 28. ElodesPublished in Bulletin of the Natural History Museum. Botany series., in 1996, in volume 26, issue 2, pages 75-217