00330nam a22001333 4450000100060000010000410000610100080004710200070005520000380006221000340010021500160013467500110015070000350016192390  a20130928              frey50          arus  aRU  aTeoriâ riska v morskoj praktike  aLeningradcSudostroenied1983  a152 s.cil.  a629.5   aAbčukbVladimir Avraamovič