Publication suspended 1924-1931; new series numbering began with issue for Jan. 1931. Cf. ULS.
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
Abstracts in English.
Issued by: Società italiana di scienze naturali, and Museo civico di storia naturale di Milano, 1981-
Description based on: 2. ser., anno 60, n. 1-2 (giugno 1990); title from cover.