00461nam a2200169Ia 4500008004100000020001500041082001800056100002600074245003100100250000600131260004300137300000800180650004100188650003400229653001200263653001600275170901s1981    xx            000 0 und d  a081381670X  a632.425bL67B  aLittlefield, J. Larry 0aBiology of the Plant Rusts  a1  aUSAbLowa State University Pressc1981  a103  aAgriculture and related technologies  aTechnology (Applied sciences)  aBiology  aPlant rusts