00342nam a2200109 a 450000500170000008200190001710000200003611000210005624501100007726000270018730000180021420251203091002.0  a320.0973,bche  aChernyak, Yefim  aSchneierson, Vic  aAmbient conflicts: chapters from the history of relations between countries with different social systems  aMoscow: Progressc1987  a384p.c20 cm.