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

nork Silva, N. T. M. H. de
Argitaratua 1987

Weed ecology : implications for management /

nork Radosevich, Steven R.
Argitaratua 1997

Weed ecology : implications for vegetation management /

nork Radosevich, Steven R.
Argitaratua 1984

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

nork Håkansson, Sigurd, 1928-
Argitaratua 2003

Westcott's plant disease handbook /

nork Westcott, Cynthia, 1898-
Argitaratua 2008

Xanthomonas /

Argitaratua 1993