@book{256088,
	author = {Caetano, L.C.S.},
	title = {Soil chemical characteristics, biomass production and levels of nutrient and heavy metals in corn plants according to doses of steel slag and limestone
},
	url = {http://www.scielo.br/pdf/rceres/v63n6/0034-737X-rceres-63-06-00879.pdf}
}