The planets : solved and unsolved problems /
by D. Ya. Martynov.
APA Citation
Martynov, D. I͡A. (Dmitriĭ I͡Akovlevich). (1972). The planets : solved and unsolved problems. Washington: National Aeronautics and Space Administration ; Springfield, Va. : for sale by the National Technical Information Service.
MLA Citation
Martynov, D. I͡A. (Dmitriĭ I͡Akovlevich). The Planets : Solved And Unsolved Problems. Washington: National Aeronautics and Space Administration ; Springfield, Va. : for sale by the National Technical Information Service, 1972.
Warning: These citations may not always be complete (especially for serials).