534,953 ASSISTED Assisted circulation 2 / ed. by Felix Unger / with contributions by K. Affeld /et al./. - Berlin /etc./ : Springer Verl., 1979 - 25 cm /Vol./ 2. - 1984-. - XV, /1/, 430 s. : il., wykr. ; 25 cm ISBN 3-540-13055-1 Springer-Veri, /etc./ ISBN 0-387-13055-1 Springer-Verl. New York/etc./