Control of aphids of ornamentals
Robertson, R.L.
Control of aphids of ornamentals - Raleigh 1968 - 1-4 p. - Aphids, Ornamentals North Carolina Agricultural Extension Service. Extension Folder No. 176 .
Control of aphids of ornamentals - Raleigh 1968 - 1-4 p. - Aphids, Ornamentals North Carolina Agricultural Extension Service. Extension Folder No. 176 .