Fimmel, Richard O et al. <br/><br/>
Pioneer :  first to Jupiter, Saturn and beyond / 
R. O. Fimmel, James Van Allen and Eric Burgess. 
 - Washington, DC :  National Aeronautics & Space Administration,  1980. 
 - x, 285 p. ;  29 cm. 
<br/><br/> Open access. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy.<br/>Planets--Jupiter, Saturn etc.