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toen langley in 1906 stierf werd abbot in 1907 volledig directeur.
gračanica () may refer to:==places==*gračanica, kosovo, a town and municipality in kosovo*gračanica, bosnia and herzegovina, a municipality in bosnia and herzegovina*gračanica (prijepolje), a village in prijepolje municipality, in southwest serbia*gračanica, ljubovija, a village in the ljubovija municipality, in western serbia==churches==*gračanica monastery, the famous church in gračanica, kosovo, built in the 14th century*new gračanica monastery, gračanica monastery copy in chicago*hercegovačka gračanica, gračanica monastery copy in trebinje
het lunar orbiter-programma werd bestuurd door nasa langley research center voor usd 150 tot 200 miljoen.
the use of lunar orbiters for tracking to evaluate the manned space flight network tracking stations and apollo orbit determination program was successful, with three lunar orbiters (2, 3, and 5) being tracked simultaneously from august to october 1967.