Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Winona and Ridge Ruin, Part I, Architecture and Material Culture. John C. Mcgregor Background by Harold S. Colton Appendix I,“Turkey Tank Pit House,” John C Mcgregor. Appendix 2,“Plant Materials from Winona and Ridge Ruin,” Volney H. Jones. Appendix 3,“Skeletal Material from Winona and Ridge Ruin,” Katharine Bartlett.(Museum of Northern Arizona, Bulletin 18, 309 pp., 82 fig. including 4 maps, 17 tables. Northern Arizona Society of Science and Art, Flagstaff, February, 1941.)
The present status of the European beaver, Castor fiber Linnaeus, 1758 an investigation which was carried out at the instigation of the" International Union for the Conservation of Nature and Natural Resources (IUCN)"