Doble via(1st Edition) Comunicacion en espanol, StandAlone (World Languages) by Ronald J. Friis, Tatiana Seeligman, Tatiana Sã Eligman Paperback, 288 Pages, Published 2011 by Cengage Learning International Edition ISBN-13: 978-0-495-91509-6, ISBN: 0-495-91509-2
Mastering Norwegian (Hippocrene Mastering Series) by Eric J. Friis Paperback, 179 Pages, Published 1995 by Hippocrene Books ISBN-13: 978-0-7818-0320-5, ISBN: 0-7818-0320-9
Campo Aleman(1st Edition) The First Ten Years of Anaheim by Leo J. Friis Hardcover, 158 Pages, Published 1983 by Friis Pioneer Pr ISBN-13: 978-0-943480-55-8, ISBN: 0-943480-55-8
Monastery of Petschenga Sketches of Russian Lapland, from Historical and Legendary Sources (Classic Reprint) (Hardback) by J. A. Friis Hardcover, Published 2017 by Fbc Ltd ISBN-13: 978-0-266-88327-2, ISBN: 0-266-88327-3
Monastery of Petschenga Sketches of Russian Lapland, from Historical and Legendary Sources (Classic Reprint) (Paperback) by J. A. Friis Paperback, Published 2017 by Forgotten Books, United States ISBN-13: 978-1-332-74345-2, ISBN: 1-332-74345-5
Westward to Vinland The Discovery of Pre-columbian Norse House-sites in North America by Helge Ingstad Paperback, 249 Pages, Published 1972 by Harper Colophon Books ISBN-13: 978-0-06-090281-0, ISBN: 0-06-090281-7