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Titlebook: Environmental History and Palaeolimnology; Proceedings of the V J. P. Smith,P. G. Appleby,P. E. O’Sullivan Conference proceedings 1991 Spri

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41#
發(fā)表于 2025-3-28 16:38:42 | 只看該作者
A Brief Journey in Discrete Mathematicsdures used, together with alpha counting techniques, are important factors influencing lead-210 determinations and tailing corrections using its granddaughter product polonium-210. Optimization of these parameters is of prime importance to achieve economic and accurate analyses, especially at low lead-210 concentrations and small sample sizes.
42#
發(fā)表于 2025-3-28 21:43:17 | 只看該作者
Text and Tradition: An Overview of Sourcesecision and accuracy. Finally, some suggestions are made about how these erosion records may be used to model hydrological, pedological and geomorphological processes, thus linking together long term, short term and contemporary timescales of process operation.
43#
發(fā)表于 2025-3-29 01:35:45 | 只看該作者
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47#
發(fā)表于 2025-3-29 18:51:17 | 只看該作者
48#
發(fā)表于 2025-3-29 22:13:49 | 只看該作者
Sediment characteristics in relation to cultivation history in two varved lake sediments from East ect the simultaneous reactions to land-use changes of both vegetation and sediment quality; reactions which are reflected more drastically in the sediment quality of small Hein?lampi than the larger Lake Suurj?rvi.
49#
發(fā)表于 2025-3-30 01:48:41 | 只看該作者
During the 65 papers were presented at seven sessions and 52 posters symposium displayed. Three late afternoon/evening special lectures were given, one of which was a memorial to the late Ed. Deevey, to whom this volume is dedicated. Associated with the symposium were five excursions to various par
50#
發(fā)表于 2025-3-30 07:22:34 | 只看該作者
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