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document
Keuning, Lex A. (author), Gerritsma, J. (author)
journal article
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Keuning, Lex J.A. (author)
doctoral thesis 1977
document
Keuning, Lex J.A. (author)
report 1979
document
Journee, Johan M.J. (author), Keuning, P.J. (author), Vis, F.C. (author)
report 1980
document
Keuning, Lex J.A. (author)
report 1981
document
Keuning, Lex J.A. (author), Gerritsma, J. (author)
journal article 1982
document
Beukelman, W. (author), Huijsmans, R.H.M. (author), Keuning, P.J. (author)
journal article 1983
document
Keuning, Jelle P.J. (author), Journee, J.M.J. (author)
report 1983
document
Beukelman, W. (author), Keuning, P.J. (author), Huijsmans, R.H.M. (author)
report 1983
document
Keuning, Lex J.A. (author)
journal article 1984
document
Keuning, J.A. (author)
report 1984
document
Keuning, Lex J.A. (author)
report 1984
document
Keuning, Lex J.A. (author)
report 1984
document
Beukelman, Wim (author), Keuning, Lex (author)
report 1985
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Keuning, Lex J.A. (author)
report 1986
document
Beukelman, Wim (author), Keuning, Lex (author)
report 1986
document
Keuning, Lex J.A. (author)
report 1986
document
Keuning, Lex J.A. (author)
report 1986
document
Keuning, Lex J.A. (author)
lecture notes 1987
document
Keuning, Lex J.A. (author)
report 1988
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