Geoenvironmental mapping: methods, theory and practice: Peter T. Brobowsky; A.A. Balkema, Rotterdam, 2002, 725pp, $139, ISBN 90 5410 4872.: methods, theory and practice : Peter T. Brobowsky; A.A. Balkema, Rotterdam, 2002, 725pp, $139, ISBN 90 5410 4872.