629.455 Planetary flights
629.4553 Mars (Planet)--manned flights to de
629.455 Flüge zu Planeten
629.4553 Mars (Planet)—bemannte Flüge zum
Dewey Decimal Classification
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License by OCLC Online Computer Library Center, Inc. Permissions beyond the scope of this license may be available at here. All copyright rights in the Dewey Decimal Classification system are owned by OCLC. Dewey, Dewey Decimal Classification, DDC, OCLC and WebDewey are registered trademarks of OCLC.