00303nam a2200097Ia 4500008004100000082002100041100003700062245005500099260004300154300000800197140113s9999    xx            000 0 und d  a631.52(213)   K9  a"Ferwarda, F.B. & Wit, F., Eds."  aOutlines of perennial crop breeding in the tropics  a1969bVeenman & Zonen N.V.cWageningen  a511