00521nam a2200169Ia 4500001001000000003000500010008004100015010001100056040000900067082001700076100002300093245012200116260004500238300001100283650003000294650002700324Para_6490CHAP220125s1930    xx            000 0 und d  a205348  cCHAP  aPA 632.93 W4  aWeber, Gustavus A.  aThe plant quarantine and control adminstration :b its history, activities and organization  /c by Gustavus A. Weber  aWashington :b The brookings institution  a198 p.  aEntomología económica  aPlantas x cuarentena