Vernon, R.
Field guide to important arable weeds of Zambia - Chilanga,Zambia Dep.of Agric. 1983 - 151 s. : ill.
ARABLE WEEDS WEEDS ZAMBIA
581.9
Field guide to important arable weeds of Zambia - Chilanga,Zambia Dep.of Agric. 1983 - 151 s. : ill.
ARABLE WEEDS WEEDS ZAMBIA
581.9