Birch leaf-mining sawfly fenusa pumila klug
Friend, R.B.
Birch leaf-mining sawfly fenusa pumila klug - New Haven 1933 - 294-364 p. - Connecticut Agricultureal Experiment Station. Bulletin No. 348 .
Birch leaf-mining sawfly fenusa pumila klug - New Haven 1933 - 294-364 p. - Connecticut Agricultureal Experiment Station. Bulletin No. 348 .