00791nam0 2200229 450 00002505220090325155309.020090325d1951----km-y0itay50------baengUSa-------001yyMariner's gyro-navigation manualfor masters, mates, marine engineers and potential ship's officersby Walter J. O'HaraCambridge (Md.)Cornell Maritime Press1951XVIII, 162 p.ill.22 cmMariner's gyro-navigation manual44326623.8620NaviO'Hara,Walter J.633341ITUNIPARTHENOPE20090325RICAUNIMARC000025052S 623.86/12S 169DSA2009Mariner's gyro-navigation manual44326UNIPARTHENOPE