TY - `EDBOOK` A3 - Ørvig, Tor TI - Current problems of lower vertebrate phylogeny : proceedings of the Fourth Nobel Symposium held in June 1967 at the Swedish Museum of Natural History (Naturhistoriska Riksmuseet) in Stockholm PB - Interscience Publ. CY - New York [u.a.] PY - 1968 LA - eng SP - 539 S. T2 - Proceedings of Nobel Symposium M1 - 4 CN - 69 B 2952 AN - UBHD-1031274 ER -