Pillai, R. S., & Koshy, M. (1966). Estimation of an Apparently Sudden Population Build-Up in the Snail, Macrochlamys Indica Benson in Calcutta. Records of the Zoological Survey of India, 64(1-4), 169–172. https://doi.org/10.26515/rzsi/v64/i1-4/1966/161536