Electronic reproduction. [Place of publication not identified] : HathiTrust Digital Library, 2010.
Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. http://purl.oclc.org/DLF/benchrepro0212
In Spanish; recent issues have abstracts in English and Spanish
Description based on: Núm. 1 (ene-dic 1990); title from PDF cover (publisher’s Web site, viewed Apr. 30, 2019)