G.M. Clemence, "Interplanetary Navigation", an offprint from Proceedings of the IRE ( Volume: 48 , Issue: 4 , April 1960 ), pp [497]-499
"Summary: The similarities and differences between interplanetary navigation and navigation on the earth are discussed. It is shown that in interplanetary space, position-fixing can be accomplished by a simple extension of the techniques already familiar to all navigators; but, when very close to the destination, other techniques are more suitable."
Original self wrappers. Old fold running vertically across the pamphlet. VG copy, and scarce. $95
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