01015nam0 2200289 450 00002413120090309113706.020090309d1948----km-y0itay50------baengUSy-------001yyGraphical construction of wave refraction diagramsby J. W. Johnson, M. P. O'Brien, and J. D. IsaacsWashingtonU. S. Govt. Print. Off.194845 p.ill.26 cmH. O. publication605Technical report22001H. O. publicationGraphical construction of wave refraction diagrams45128Onde551.4621IdrosferaJohnson,Joe William633200O'Brien,Morrough Parker633201Isaacs,John Dove633202ITUNIPARTHENOPE20090309RICAUNIMARC000024131S 551.46/4S 65DSA2009Graphical construction of wave refraction diagrams45128UNIPARTHENOPE