Dissertation absreacts of the agriculture university, wageningen the Netherlands 1918-1968 / H. Veenman & Zonen N.V - Wegeningen: / H. Veenman & Zonen N.V - 349p. Subjects--Topical Terms: Bibliography Subjects--Index Terms: Alphabetical index Universal Decimal Class. No.: R 012:0.43:63(492) / K8