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and Salas (1985) compared kriging with several other interpolation techniques, including inverse distance, for The choice of an optimal interpolation technique for estimating annual precipitation distributions and found kriging to soil properties at unsampled locations is an important issue in site-be superior to inverse distance weighting. Warrick et(More)
For improvement of these traits in hairy vetch, it is imperative to gain insight into the magnitude of variabil-For improvement of hairy vetch (Vicia villosa Roth) as a winter ity present in the species, as this will provide the basis cover crop, it is necessary to gain insight into the magnitude of variabil-for effective selection. Phenotypic variability(More)
The operation and results of the United Kingdom External Quality Assessment Scheme for Lead in Blood, which currently has about 140 participants within and outside the U.K. are described. The choice of specimens, scheme design, and scoring of performance are discussed, as is the validity of the consensus values used as a basis for the scoring. There has(More)
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