Formes;

no.3 1930 French Ed.; no.4 1930 French Ed.; no.5 1930 French Ed.; no.5 1930 English Ed.; no.7 1930 English Ed.; no.10 1930 English Ed.; no.11-16 1931; no.12 1931 English Ed.; no.13 1931 English Ed.; no.14 1931 French Ed.; no.14 1931 English Ed.; no.15 1931 French Ed.; no.15 1931 English Ed.; no.16 1931 French Ed.; no.18 1931 French Ed.; no.18 1931 English Ed.; no.19 1931 English Ed.; no.20 1931 English Ed.; no.17-21 1931/32; no.22 1932 English Ed.; no.23 1932 English Ed.; no.24 1932 English Ed.; no.25 1932 French Ed.; no.25 1932 English Ed.; no.26-27 1932 English Ed.; no.28-29 1932 French Ed.; no.30 1932 English Ed.; no.22-33 1932/33