Ստացիր սա : Space science in the twenty-first century [electronic resource] : imperatives for the decades 1995 to 2015 : report of the study steering group / Space Science Board, Commission on Physical Sciences, Mathematics, and Resources, National Research Council.

Վերնագիր : Space science in the twenty-first century [electronic resource] : imperatives for the decades 1995 to 2015 : report of the study steering group / Space Science Board, Commission on Physical Sciences, Mathematics, and Resources, National Research Council.

Դասիչ : Չկա դասիչ

Կարգավիճակ : Անհայտ