Electronic reproduction. [S.l.] : 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; abstracts in English and Spanish.
Description based on print version record.
Description based on: Vol. 1, no. 1 (mayo 1945); title from PDF cover (publisher’s Web site, viewed Feb. 26, 2015).