Book reviews. - Franz Ferschl; Hartmut Noltemeier; Michael Bastian; Werner Dinkelbach; Paul van Beek; A. Jaeger; K. Braun; G. Sossidis (Z. Oper. Research, 1981)

Book reviews. - K. Flemming; R. Laufkötter; W. Schweitzer; F. Andria; Fred Alois Behringer; G. Sossidis (Z. Oper. Research, 1981)