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AuthorBaumanis, Juris (1)SubjectEder-Hechta fotometrs (1)
Fotometri (1)
Fotometrija (1)Gaisma - mērīšana (1)Gaismas daudzums - mērīšana (1)Light - measurement (1)
Meteoroloģija (1)
NATURAL SCIENCES (1)
Photometry (1)... View MoreDate Issued1935 (1)