ISBN 1716746639 books & textbook
Space Elevators are the Transportation Story of the 21st Century
Swan, Peter Swan, Cathy Fitzgerald, Michael Hall, Vern Peet, Matthew Torla, James
Lulu.com /2020-07-14 Paperback / 159 Pages
isbn-10: 1716746639 / isbn-13: 9781716746635
