6 p. tables, figs. 1 July 1991. 1 July 1991. 52 p. illus. 1 June 1992.
English articles have Spanish abstracts, Spanish articles have English abstracts.
Articles are individually paged. 1 November 1993. A Workshop for Natural History Museums and Collectors, by Sally Shelton, Paisley Cato, and Philip Unitt, Eds. 15 December 1997. 31 January 1998.