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/ johnsb -- johnsson a-o / 00652
- OCR-text (abbyy)
Johnson, Nils G/unnar/ A standard transparency-meter. 4:0 Göteborg 1944. =Skrifter^ Svenska hydrografisk-biologiska kommissionens. N. S.:Hydrografi. 19. ¿^^i
- OCR-text (abbyy-crop)
Johnson, Nils G/unnar/ U A Standard transparency-meter. 4:0 Göteborg 1944. =Skrifter, Svenska hydrografisk-biologiska kommissionens. N. S.:Hydrografi. 19. Ley, /«2///000 et / 1MÏ, Ourn.
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