Pastāsti draugiem par šo preci:
Acid Waters in Wales - Monographiae Biologicae R.W. Edwards 1990 edition
Acid Waters in Wales - Monographiae Biologicae
R.W. Edwards
These demonstrated a clear correspondence between the biological quality and fisheries of streams in the catchment and aspects of stream chemistry, par ticularly pH, aluminium and calcium on the one hand, and catchment land use on the other.
338 pages, biography
Ziemassvētku dāvanas var atgriezt līdz 31. janvārim