Studies.

no.1; no.1-6; no.11-13 1940-1941; no.1-3,5-8,10,12-13,29,31,33 (v.1-5,11-12); no.2; no.3; no.3-10; no.7-12; no.11-17; no.13-17; no.16-20 1942-1944 (v.6-8); no.18; no.18-21; no.19; no.21; no.22; no.22-25; no.23; no.24; no.25; no.26; no.26-33; no.26-27 1947; no.27; no.28; no.29; no.30; no.31; no.32; no.33; no.34; no.34-38; no.35; no.35-41 1949-1950 (v.13-14); no.36; no.37; no.38; no.39; no.39-44; no.40; no.41; no.42; no.42-47 1950-1951 (v.14-15); no.43; no.44; no.45; no.45-51; no.46; no.47; no.48; no.48-54 1951-1952 (v.15-16); no.49; no.50; no.51; no.52; no.53; no.54; no.55; no.55-60 1953-1956 (v.17-20); no.56; no.57; no.58-60; no.60