National Research Council
€72.50
€43.50
€47.60
€56.00
€34.80
€50.75
Multisystems, inc
€85.40
€57.40
€26.10
€51.80
Committee on Science, Engineer
€87.00
€79.80
National Science Foundation
€54.60
Michael C. Kelley
€96.60
€46.20
€141.40
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