Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 1, pages 5-6
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 1, pages 6-9
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 1, pages 10-11
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 1, pages 11-12
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 2, pages 23-25
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 2, pages 25-27
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 2, pages 28-29
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 3, pages 35-37
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 3, pages 37-39
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 3, pages 41-43
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 3, pages 44-46
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 3, pages 49-52
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 4, pages 61-62
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 4, pages 63-65
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 4, pages 66-69
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 4, pages 70-71
Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 4, pages 72-74