Saxrna K.P, . (1969). Plant Physiology and Ecology. : Prakashan Kendra, Lukhnow.
Saxrna K.P, . 1969. Plant Physiology and Ecology. : Prakashan Kendra, Lukhnow.
Saxrna K.P, . Plant Physiology and Ecology. : Prakashan Kendra, Lukhnow. 1969.