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100   $a20090309d1948----km-y0itay50------ba
101 0 $aeng
102   $aUS
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200 1 $aGraphical construction of wave refraction diagrams$fby J. W. Johnson, M. P. O'Brien, and J. D. Isaacs
210   $aWashington$cU. S. Govt. Print. Off.$d1948
215   $a45 p.$cill.$d26 cm
225 2 $aH. O. publication$v605$iTechnical report$v2
410  0$12001$aH. O. publication
500 10$aGraphical construction of wave refraction diagrams$945128
610 1 $aOnde
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700  1$aJohnson,$bJoe William$0633200
701  1$aO'Brien,$bMorrough Parker$0633201
701  1$aIsaacs,$bJohn Dove$0633202
801  0$aIT$bUNIPARTHENOPE$c20090309$gRICA$2UNIMARC
912   $a000024131
951   $aS 551.46/4$bS 65$cDSA$d2009
996   $aGraphical construction of wave refraction diagrams$945128
997   $aUNIPARTHENOPE