Dixit, P., Saxena, G., Kumar, D. and Singh, L. 2016. Behavioural studies on the pollen grains of Pinus roxburghii collected from Lucknow, India- A report. Journal of Palaeosciences. 65, (1-2) (Dec. 2016), 285–296. DOI:https://doi.org/10.54991/jop.2016.316.