Growth efficiency ofDaphinia magna. I. The effect of food concentration Kees Kersting OriginalPaper Pages: 3 - 20
Abundancy estimations of aDaphnia magna population in a small artificial pond Robert Lingeman OriginalPaper Pages: 30 - 38
Water quality research in the area of the river Kromme Rijn B. BeltmanW. Bleuten OriginalPaper Pages: 39 - 51
Environmental changes in the Oisterwijk moorland pool area, evident from the composition of the desmid flora P. F. M. Coesel OriginalPaper Pages: 52 - 53
Changes in the moorland pools near Oisterwijk between 1840 and 1975 H. van DamH. Kooyman-Van Blokland OriginalPaper Pages: 54 - 55