Christopher Reynolds, The pond on my window-still, The story of a freshwater aquarium Londres, Andre Deutsch, 1969, pp. 85-94.
Archives du mot-clé paper
Put in a jar
Millicent E. Selsam, Underwater Zoos, New York, William Morrow & Company, 1961.
Fragment of paper
Harold Bastin, Freaks and marvels of insect life, Londres, Hutchinson, 1954, pp. 104-105.
Make a drawing
Ernest E. Unwin, Pond problems, The Cambridge nature study series, Cambridge University Press, (1914), 1934, pp. 49-50.
That depends on the family
Clotilde von Wyss, Living creatures : Studies of Animals and Plant Life, Londres, A. & C. Black, 1927, pp. 59-67.