| 000 | 00379 am a2200121 a 4500 | ||
|---|---|---|---|
| 100 | 1 | _aHartzell, F.Z. | |
| 245 | 1 | _aSusceptibility to dust and spray mixtures of the pear psylla (Psylla pyricola forster) | |
| 260 |
_aGeneva _c1925 |
||
| 300 | _a1-123 p. | ||
| 942 |
_2udc _cB |
||
| 440 | _aPsylla New York State Agricultural Experiment Station. Bulletin No. 527 | ||
| 901 | _aS54066 | ||
| 999 |
_c112088 _d112088 |
||