ONADEKO, A. B.; AMAEZE, N. H.; OBE, M. A. Acute And Chronic Effect Of Lead Nitrate And Cadmium Sulphate In Tadpoles of Amietophrynus Regularis (Common African Toad) . The Bioscientist Journal, v. 4, n. 1, p. 1-12, 4 May 2016.