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- Kooyman, P.N.C (author) master thesis 1991
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- Eldridge, R. (author), Turner, T. (author) conference paper 1991
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- van Roosmalen, C.I.M. (author) other 1991
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- van Heukelum, J.M. (author) report 1991
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- Bea, Robert G. (author), Moore, William H. (author) conference paper 1991
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- Fazio, R. (author), Schön, G. (author) journal article 1991
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- Beaumont, J.G. (author), Robinson, D.W. (author) book chapter 1991
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- de Zwaan, Anton P. (author) report 1991
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- Advani, S.K. (author) report 1991
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- Adegeest, L.J.M. (author) report 1991
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- Butler, H. (author), Honderd, G. (author), Van Amerongen, J. (author) journal article 1991
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- Stoop, F.J. (author) report 1991
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Visser, D. (author), Thijssen, P.M.H (author)Hogbomite is reported from two upper-amphibolite and granulite-facies, sapphirine-bearing, Al-Mg-Fe-rich and silica-poor lens-shaped layers within the Bamble Sector, south Norway. Primary assemblages, indicating peak metamorphic conditions of 773-844 °C at 7 kbar (Mg-Fe exchange thermometry), are spinel-sapphirine-biotite-gedrite, spinel-corudum...report 1991
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- Kooynman, P.N.C. (author) master thesis 1991
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- Newman, John Nicholas (author) book 1991
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- Eatock Taylor, R. (author) conference paper 1991
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- Savenye, R.Ph.A.C. (author) report 1991
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- Davids, S.W. (author) master thesis 1991
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- van Heukelum, J.M. (author) master thesis 1991
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- Visser, R. (author), Dorenbos, P. (author), van Eijk, C.W.E. (author), Hollander, R.W. (author), Schotanus, P. (author) journal article 1991