@book{147958,
	author = {Symposium on Science and Technology and Research Council of Zimbabwe.},
	title = {Proceedings of the Second Symposium on Science and Technology [held at] the Harare International Conference Centre, Harare, Zimbabwe, September 11-13, 1990.},
	publisher = {Research Council of Zimbabwe,},
	year = {1990.},
	address = {Harare :}
}