00464nam 2200181z- 450 991013481700332120180201192317.0(CKB)3830000000000334(EXLCZ)99383000000000033420151026cuuuuuuuu -u- -engX-15 Research ResultsNASAWendell H. Stillwell1012325BOOK9910134817003321X-15 Research Results2349913UNINA