Mandal, G.P. et al. 2007. Role of Soil pH on the Collembolan Fauna of Two Uncultivated Fields of North 24 Parganas, West Bengal. Records of the Zoological Survey of India. 107, 3 (Sep. 2007), 51–56. DOI:https://doi.org/10.26515/rzsi/v107/i3/2007/159124.