000 | 00342 am a2200121 a 4500 | ||
---|---|---|---|
100 | 1 |
_a _d |
|
245 | 1 | _aAnnual report agricultural extension service | |
260 |
_aPennsylvania _c1920 |
||
300 | _a1-58 p. | ||
942 |
_2udc _cB |
||
440 | _aAgriculture Pennsylvania Agricultural Experiment Station. Extension Circular No. 83 | ||
901 | _aS47665 | ||
999 |
_c103641 _d103641 |