Items where Author is "Zingstra, H."
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Number of items: 3.
Article
Zingstra, H. De ontwikkeling van de aardappelveredeling. , 1960.
Zingstra, H. 50 jaren bintje. , 1955.
Ros, B. and Zingstra, H. De teelt van weinig bekende, oude aardappelrassen. , 1954.