00414nam a22001457a 4500 230418b |||||||| |||| 00| 0 eng d National Science Library National Science Library 371.66 N1 Satellite technology in education London: Routledge, 1991 xvi, 221p. Education Satellite technology udc BK 20344 20344 0 0 udc 0 37166_N1 0 29815 NSL NSL GF/Rk-5/C-12/R-5 1991-09-01 0 371.66 N1 172060 2023-04-18 00:00:00 2023-04-18 BK