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

Dahkki Silva, N. T. M. H. de
Almmustuhtton 1987

Weed ecology : implications for management /

Dahkki Radosevich, Steven R.
Almmustuhtton 1997

Weed ecology : implications for vegetation management /

Dahkki Radosevich, Steven R.
Almmustuhtton 1984

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

Dahkki Håkansson, Sigurd, 1928-
Almmustuhtton 2003

Westcott's plant disease handbook /

Dahkki Westcott, Cynthia, 1898-
Almmustuhtton 2008

Xanthomonas /

Almmustuhtton 1993