WEAR AND FRICTION OF VARIOUS POLYMER LAMINATES IN LIQUID NITROGEN AND IN LIQUID HYDROGEN.

By Wisander,Donald W,Ludwig,Lawrence P. Nasa, Washington, D.C. 1966 . 13 , Bound With: Nasa Tn D-3701-3705,3707-3710.

FRICTION AND WEAR IN CRYOGENIC LIQUIDS FOR COMPOSITES OF PHENOLIC AND OF POLYTETRAFLUOROETHYLENE OF VARIOUS PARTICLE SIZES AND CONCENTRATIONS

By Wisander,Donald W,Ludwig,Lawrence P. Nasa, Washington, D.C. . 15 , Bound With Nasa Tn D-4561-64,4566-70