Spacecraft description presented as well as details on its launching procedures and other aspect of operations.

Overview of the program involving exploration activities into the planet. Includes other specifications.

Explains details of how the spacecraft operates including experiments and other technical data on its launching.

Provides a summary of the 1971 Soviet Mission.

Overviews spacecraft specifications and instruments.

Profiles the 1973 Soviet mission to Mars.

Presents a description of the spacecraft and instruments.