Earth & Mars, as different as they are alike.

Bibliographic Details
Corporate Author:	United States. National Aeronautics and Space Administration
Format:	Government Document Book
Language:	English
Published:	[Washington, D.C.] : National Aeronautics and Space Administration, [2002]
Edition:	Rev. 1 6/02.
Subjects:	Mars (Planet) Earth (Planet)
Online Access:	https://purl.fdlp.gov/GPO/LPS51093

Description
Item Description:	Title from title screen (viewed on July 2, 2004). Date of issue from prelim. page. Electronic resource.
Format:	Mode of access: Internet via the NASA Web site. Address as of 7/2/04: http://spacelink.nasa.gov/Instructional.Materials/NASA.Educational.Products/Earth.and.Mars/Earth.and.Mars.pdf; current access is available via PURL.