00341nam a22001457a 4500 193022 193022 0716663031 A-644449 A-644449 925 YOU Space Technology London World Book International 1994 62p. Young Scientist 18 ddc CH 925 YOU 0 0 0 0 ZLS ZLS 2022-10-13 1 1 925 YOU A-644449 2022-11-10 00:00:00 2022-10-13 2022-10-13 CH