17-th Intern. cosmic ray conf. France.1981 , 01.1981    Включает:   Nikolsky S.I. ,     Nikolskaja N.M. ,     Stamenov J.N. ,     Ushev S.Z. Mass composition of the primary cosmic radiation at energies 10~15-10~16 eV , 01.1981   Nikolsky S.I. ,     Krasilnikov D.D. ,     Shamsutdinova F.K. ,     Makarov K.M. ,     Krasilnikov A.D. Energy dependence of intensity anisotropy characteristics and the origin of cosmic rays with energy above 10~19 eV , 01.1981 Copyright © БЕН РАН.