Published in Nautilis, in 1931, in volume 44, pages 73-75
Published in Nautilis, in 1931, in volume 44, pages 75-77
Published in Nautilis, in 1931, in volume 44, pages 84-85
Published in Nautilis, in 1931, in volume 44, pages 87-91
Published in Nautilis, in 1931, in volume 44, pages 94-95
Published in Nautilis, in 1931, in volume 44, pages 95-96
Published in Nautilus, in 1931, in volume 44, pages 109-113
Published in Nautilus, in 1931, in volume 44, pages 113-114
Published in Nautilis, in 1931, in volume 44, pages 115-119
Published in Nautilis, in 1931, in volume 44, pages 119-121
Published in Nautilis, in 1931, in volume 44, pages 121-122
Published in Nautilis, in 1931, in volume 44, pages 122-123
Published in Nautilis, in 1931, in volume 44, pages 127-130
Published in Nautilis, in 1931, in volume 44, pages 131-137
Published in Nautilis, in 1931, in volume 44, pages 138-140
Published in Nautilis, in 1931, in volume 45, pages 6-10
Published in Nautilis, in 1931, in volume 45, pages 10-16
Published in Nautilis, in 1931, in volume 45, pages 16-20
Published in Nautilus, in 1931, in volume 45, pages 20-21
Published in Nautilis, in 1931, in volume 45, pages 21-25
Published in Nautilis, in 1931, in volume 45, pages 25-27
Published in Nautilis, in 1931, in volume 45, pages 37-41
Published in Nautilis, in 1931, in volume 45, pages 41-47
Published in Nautilus, in 1931, in volume 45, pages 47-51
Published in Nautilis, in 1931, in volume 45, pages 51-52
Published in Nautilus, in 1931, in volume 45, pages 53-55
Published in Nautilis, in 1931, in volume 45, pages 55-58
Published in Nautilis, in 1931, in volume 45, pages 67-68