Home › Authors › Working Group on Extraterrestrial Resources (6th 1968 Brooks Air Force Base, Tex.) 👤 Working Group on Extraterrestrial Resources (6th 1968 Brooks Air Force Base, Tex.) 1 book Books by Working Group on Extraterrestrial Resources (6th 1968 Brooks Air Force Base, Tex.) Proceedings of the sixth annua Proceedings of the sixth annual meeting of the Working Group on Extraterrestrial Resources 1968