Weed control strategies for coffee in Papua New Guinea : smallholders, shade, socio-economic and other factors /

by Silva, N. T. M. H. de
Published 1987

Weed ecology : implications for management /

by Radosevich, Steven R.
Published 1997

Weed ecology : implications for vegetation management /

by Radosevich, Steven R.
Published 1984

Weeds and weed management on arable land : an ecological approach /

by Håkansson, Sigurd, 1928-
Published 2003

Westcott's plant disease handbook /

by Westcott, Cynthia, 1898-
Published 2008

Xanthomonas /

Published 1993