Special issue on "Annual number". Combined issue for the months of July and August 1929 with Initial few pages are missing. Volume and issue number: Volume 43, Issue 1-2 / Volume 43, Issue 1-2.
Special issue on "Annual number" and combined issue for the months of July and August 1937. Volume and issue number: Volume 59, Issue 1-2 / Volume 59, Issue 1-2.