@book{21305,
	author = {Roodt, M. J. A.},
	title = {Natuurwetenskappe vir graad 9 :},
	publisher = {Nasou,},
	year = {2001.},
	series = {Die leerstasie},
	address = {Kaapstad :},
	edition = {1ste uitg.},
	note = {Includes glossary.}
}