Combined issue for the months of January and February 1948. Volume 20 is given on the inner title as this issue was published in 1948 and is a part of series Volume 20. Volume and issue number: Volume 20, Issue 1-2 / Volume 20, Issue 1-2.
Combined issue for the months of January and February 1948. Volume 20 is given on the inner title as this issue was published in 1948 and is a part of series Volume 20. Volume and issue number: Volume 20, Issue 1-2 / Volume 20, Issue 1-2.