Publication
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Natuurstudie rond Eindhoven Article
Natura, 67(4), 35-38.January 1970
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De Varkensput en de zeggen Article
Natura, 67(4), 38-41.January 1970
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De Strabrechtse heide Article
Natura, 67(4), 50-53.January 1970
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Petasites hybridus (Groot hoefblad) Article
Natura, 67(2/3), 19-21.January 1970
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Een mezenpraatje Article
Natura, 67(6), 79-84.January 1970
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Een Sushkins gans anser neglectus nabij de grote Peel Article
Limosa, 44(4), 102-104.January 1971
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In situ gymnosperm pollen from the Middle Jurassic of Yorkshire Article
Acta botanica neerlandica, 20(1), 1-97.January 1971
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Interaction of metallic ions and chelating agents in indoleacetic acid destroying enzymes Article
Acta botanica neerlandica, 20(1), 98-99.January 1971