Ecologie des insectes aquatiques d'une tourbiere du Haut-Jura /

by Matthey, Willy, 1929-2012
Published 1971

The living soil : fundamentals of soil science and soil biology /

by Gobat, Jean-Michel, Matthey, Willy, 1929-2012, Aragno, Michel, 1942-
Published 2004