MARS SCIENTIFIC MODEL.
Mars Scientific Model. JPL Document No. 606-1. Pasadena, CA: JPL, July 15, 1968.
4to. Several folding plates, some printed in color with transparent overlays. 2 folding charts in pocket at front. Tabbed, punched, and in original vinyl 3-ring binder.
"Our aim in this document is to present an up-to-date scientific model of the planet Mars, with data values, limitations and sources, and with a limited amount of interpretation where appropriate" (Preface). The title on the binder states "Volume 1," but the work appears complete and we have not been able to locate a second volume in institutions.