@book{56275,
	author = {EI-Shazly, M.A. and Morad, M.M.},
	title = {Development of a multi-purposes macidne for secondary tillage, fertilizing and planting some medicinal and aromatic plants},
	url = {http://nile.enal.sci.eg/EALE/2012/MJAE/2912/3/951.pdf}
}