共 50 条
- [21] THE RATIO BETWEEN TROPHIC LEVELS OF FRESH-WATER PLANKTON ZHURNAL OBSHCHEI BIOLOGII, 1981, 42 (02): : 199 - 209
- [24] ATOMIC FLUORESCENCE DETERMINATION OF MERCURY IN FRESH-WATER ECOSYSTEMS JOURNAL OF AUTOMATIC CHEMISTRY, 1995, 17 (02): : 65 - 71
- [26] SPECTROMETRIC DETERMINATION OF COBALT IN LOW-LEVELS IN SOILS AND PLANTS ANALES DE LA ASOCIACION QUIMICA ARGENTINA, 1983, 71 (01): : 107 - 112
- [30] THE LICHEN LINE AND HIGH WATER LEVELS IN A FRESH-WATER STREAM IN FLORIDA BRYOLOGIST, 1984, 87 (03): : 261 - 265