@book{37673,
	author = {Sen, S. P. and Plant Physiology Forum (Calcutta, India) and National Symposium on Biofertilizers: Potentialities and Problems},
	title = {Biofertilizers :},
	publisher = {Plant Physiology Forum :},
	year = {1988.},
	address = {Calcutta :},
	note = {Papers of the National Symposium on Biofertilizers: Potentialities and Problems, held at the Bidhan Chandra Krishi Viswavidyalaya, 1986; organized by the Plant Physiology Forum, Calcutta.}
}