@book{30734,
	author = {National Fertilizer Development Center. Muscle Shoals, Ala.},
	title = {New developments in fertilizer technology},
	publisher = {NFDC,},
	year = {19 -},
	address = {Muscle Shoals :},
	note = {La bilioteca tiene : v.8 1970.--v.10 1974.--v.11 1976}
}