Titlebook: Preismanagement; Konzeption, Umsetzun Bj?rn Schuppar Book 2006 Gabler Verlag | Springer Fachmedien Wiesbaden GmbH, Wiesbaden 2006 Business-

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Computing with Semirings and Weak Rig Groupoids,s rise to (at least) a weak rig groupoid structure, and the coherence laws are exactly the program transformations we seek. Thus it is algebra, rather than logic, which finally leads us to our correspondence.

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Metabolism of Nitric Oxide in Soil and Soil Microorganisms and Regulation of Flux into the Atmospheatmospheric NO. Because of the short atmospheric lifetime most of the emitted NO will soon be deposited again so that the nitrogen loss from one ecosystem may result in unintended fertilization of downwind ecosystems (Conrad 1990; Williams et al. 1992; Meixner 1994).