Four races of Hessian fly selected and developed from an Indiana population
Gallun, R.L.
Four races of Hessian fly selected and developed from an Indiana population - Lafayette 1961 - 0.791666667 - No. 732; Purdue Agricultural E .
Four races of Hessian fly selected and developed from an Indiana population - Lafayette 1961 - 0.791666667 - No. 732; Purdue Agricultural E .