@mastersthesis {bamford_angiosperm_1990,
	title = {The angiosperm palaeoflora from the Orapa pipe, Botswana.},
	year = {1990},
	school = {University of the Witwatersrand},
	type = {phdPhD},
	address = {Johannesburg},
	author = {Bamford, M. K.}
}
@mastersthesis {mckay_cretaceous_1990,
	title = {Cretaceous Carabidae (Coleoptera: Carabidae) from Orapa, Botswana},
	year = {1990},
	school = {University of the Witwatersrand},
	type = {phdPhD},
	address = {Johannesburg},
	author = {McKay, I. J.}
}
@mastersthesis {ngcamphalala_palynological_nodate,
	title = {A palynological investigation of the mid-Cretaceous Orapa kimberlite pipe in Botswana},
	year = {Submitted},
	school = {University of the Witwatersrand},
	type = {phdHonours},
	author = {Ngcamphalala, M.}
}
@mastersthesis {waters_cretaceous_1990,
	title = {Cretaceous Diptera from Orapa, Botswana},
	year = {1990},
	school = {University of the Witwatersrand},
	type = {phdPhD},
	address = {Johannesburg},
	author = {Waters, S. B.}
}
