Fumigation with hydrogen cyanide for control of pear psylla
Webster, R.L.
Fumigation with hydrogen cyanide for control of pear psylla - Geneva 1924 - 1-23 p. - Fumigation, Hydrogen, Cyanide, Psylla New York Agricultural Experiment Station. Bulletin No. 523 .
Fumigation with hydrogen cyanide for control of pear psylla - Geneva 1924 - 1-23 p. - Fumigation, Hydrogen, Cyanide, Psylla New York Agricultural Experiment Station. Bulletin No. 523 .