TY - BOOK TI - Proceedings of the section of sciences VL - v.25(1923) UR - https://www.biodiversitylibrary.org/item/49295 PB - Johannes Müller CY - Amsterdam PY - 1923 N1 - Translated from the Dutch. AU - Koninklijke Akademie van Wetenschappen (Netherlands) KW - 5.06(49.2)A5 KW - Natural history KW - Periodicals KW - Science ER -