https://openlibrary.org/books/OL5442259M.opdsBig wall climbing2023-01-17T06:30:53ZDoug K. Scotthttps://openlibrary.org/authors/OL774250A/Doug_K._ScottOxford University PressNew York1974xii, 348 p. :Includes bibliographical references and index.enghttps://openlibrary.org/books/OL5442259Mhttps://archive.org/details/bigwallclimbing00scoturn:ISBN:0195197674114921073092318