000 00315nam a2200121Ia 4500
008 170101s1949 xx 000 0 und d
082 _a309.2 KEL
100 _aKelsey Lincoln David
245 0 _aCooperative Extension Work.
260 _aNew York
_bComstock Pub., Asso.
_c1949
300 _a424 p
942 _2ddc
_cB
999 _c216866
_d216866