00541nam a2200169 a 450000500170000000800410001702000150005804100080007308200150008110000190009624500470011526400350016230000340019765001040023165000130033570000230034820260717091427.0260717s1986    ii            000 0 eng d  a0471859664  aeng04a621.3804221 aPratt, Timothy10aSatellite communications /cPratt, Timothy 1aNew York :bJohn Wiley,c1986.  axviii, 472 p. : ill. ; 24 cm. 4aArtificial satellites in telecommunication.
Satellites artificiels dans les télécommunications. 4aSatellit1 aBostian, Charles W