Searched for: author%3A%22Roels%2C+J.A.%22
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document
Hoeks, F.W.J.M. (author), Ten Hoopen, H.J.G. (author), Roels, J.A. (author), Kuenen, J.G. (author)
journal article 1984
document
Roels, J.A. (author)
public lecture 1979