By Mason, R.
By Westbroek, P., De Jong, E.W.
By Marjoribanks, Roger
By Van Driessche, Alexander E.S., Kellermeier, Matthias, Benning, Liane G., Gebauer, Denis
By Sunagawa, Ichiro
By Marumo, F.
By MacDougall, J. D.
By van den Haute, P., De Corte, Frans
By Varentsov, I.M.
By Severin, Kenneth P.
By Wagner, Gunther A., Haute, Peter van den, van den Haute, Peter
By Bennett, Richard, Hulbert, Matthew
By Pulinets, Sergey, Boyarchuk, Kyrill
By Pitcher, W.S.
By Manning, D.A.C., Hall, P.L., Hughes, C.R.
By Brady, Barry H.G., Brown, E. T.
By Lima-de-Faria, J.
By Bartholomew, Mervin J., Hyndman, Donald W., Mogk, David W., Mason, Robert
By Bell, Pat, Wright, David, Hayward Art Group
By Bjornerud, Marcia
By David, C., Le Ravelec-Dupin, M.
By Kupecz, J.A., etc.
By Wright, John
By Huc, A.Y.
By Alsop, G. I., Archer, S., Hartley, A. J., Grant, N., Hodgkinson, R.
By Ringrose, Philip, Bentley, Mark
By Hantschel, Thomas, Kauerauf, Armin I.
By Mavko, Gary, Mukerji, Tapan, Dvorkin, Jack