Article Sidebar download PDF Published: Feb 18, 2017 Article Details Issue Vol. 3 No. 1 (1967) Section Articles The copyright belongs to the Zoological Society of Southern Africa. Author Biography J Heeg Zoology Department Rhodes University Main Article Content Studies on Thysanura I the water economy of Machiloides Delanyi Wygodzinsky and Ctenolepisma Longicaudata Escherich J Heeg Abstract Zoologica Africana 3(1): 21-41