Conradie, W. and Conradie, C. 2015. Correlation between development and increase of number of labial tooth rows in Ghost Frog tadpoles (Anura: Heleophrynidae). Acta Herpetologica. 10, 2 (Oct. 2015), 143–148. DOI:https://doi.org/10.13128/Acta_Herpetol-16427.