TY  - BOOK
AU  -  Ehricke,Krafft A.
TI  -  Space flight / 
U1  -  629.9 EHR 
PY  - 1960///-]
CY  -  Princeton, N.J. : 
PB  -  Van Nostrand, 
KW  -  Space flight
N1  -  Includes bibliographical references;  1. Environment and celestial mechanics
ER  -