000 00323nam a2200097Ia 4500
008 220204s9999 xx 000 0 und d
082 _a63(035)
_bPRO
245 0 _aProfessional workers in state agricultural experiment stations and other co operating state institutions
260 _aUS
_bDept of Agriculture
_c1969
942 _cBK
999 _c21905
_d21905