00256nam a2200097Ia 4500008004100000082001700041100002000058245003900078260003100117300001000148260828b        |||||||| |||| 00| 0 eng d  a512bB452.AN  aBelousov, V. D.  aAlgebraic nets and quasi groupsb/  aKishinev:bShtintsa,c1971  a164p.