Current problems of lower vertebrate phylogeny.
Subtitle: Proceedings of the Fourth Nobel Sympsoim held in June 1967 at the Swedish Museum of Natural History (Naturhistoriska riksumuseet) in Stockholm.  Edited by Tor Ørvig.
Contributors: Ørvig, Tor,; Nobelstiftelsen, Stockholm; Stockholm. Naturhistoriska riksmuseum
Publisher: Almqvist & Wiksell
Published: 1968
Place of publication: Stockholm
Language: eng
Number of pages: 539
Subjects: Phylogeny -- Congresses; Vertebrates -- Congresses