Petunia trials, 1949 at the Pennsylvania State College
Meahl, R.P.
Petunia trials, 1949 at the Pennsylvania State College - Pennsylvania 1950 - 13 p. - No. 23; Pennsylvania Agricult .
Petunia trials, 1949 at the Pennsylvania State College - Pennsylvania 1950 - 13 p. - No. 23; Pennsylvania Agricult .