@inbook {3111,
	title = {Taxonomy and distribution of Echinochloa spp. with special reference to their occurrence as weeds of rice},
	booktitle = {Weed Control in Rice},
	year = {1983},
	pages = {291-306},
	publisher = {International Rice Research Institute},
	organization = {International Rice Research Institute},
	address = {Los Banos, Philippines},
	keywords = {AUSKEY, DISTRIBUTION, ECHINOCHLOA, INCOMPLETE, TAXONOMY, WEEDS},
	author = {Michael, P. W.}
}
@inbook {2278,
	title = {The value of natural classification},
	booktitle = {Numerical Taxonomy},
	year = {1983},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Berlin, Heidelberg},
	keywords = {CLADISTICS, CLASSIFICATION, INCOMPLETE, numerical taxonomy, TAXONOMY},
	author = {Funk, V. A.},
	editor = {Felsenstein, J.}
}
@book {2172,
	title = {C3, C4},
	year = {1983},
	publisher = {Oxford},
	organization = {Oxford},
	keywords = {CR REF, INCOMPLETE},
	author = {Edwards, G. and Walker, D.}
}
