by Unni, P.N, Raghavan, P, Philip, V.J
Published in Annals of botany (1976)

by Vijayakumar, K.R., Unni, P.N., Vamadevan, V.K.
Published in Agricultural and forest meteorology (1985)

by Unni P.N, Raghavan P, Philip V.J
Published in Annals of Botany (1976)

by Unni, P.N, Philip, V.J
Published in Current science (Bangalore) (01.01.1974)

by Unni, P.N, Santhakumar, G, Nair, S.R. (Centre for Water Resources Development and Management, Kozhikode 673 571, Kerala (India))
Published in International Journal of Environmental Studies (United Kingdom) (1995)

by Vijaykumar, K.R, Thomas, P.K, Unni, P.N. (Centre for Water Resources Development and Management, Calicut (India))
Published in Agricultural Research Journal of Kerala (India) (01.06.1984)

by Vijaykumar, K.R, Unni, P.N, Vamadevan, V.K. (Centre for Water Resources Development and Management, Calicut (India))
Published in Agricultural Research Journal of Kerala (India) (01.06.1984)

by Vijayakumar, K.R. (Centre for Water Resources Development and Management, Calicut, Kerala (India)), Unni, P.N, Vamadevan, V.K
Published in Agricultural and Forest Meteorology (Netherlands) (1985)

by Philip, V.J, Unni, P.N
Published in Zeitschrift für Pflanzenphysiologie (1977)

by Unni, P.N, Daniel, G, Nair, S.R. (Water Quality and Environment Division, Centre for Water Resources Development and Management, Kozhikode 673-571, Kerala (India))
Published in International Journal of Environmental Studies (United Kingdom) (1992)