スライド(ガラス種板): S37 Weseuberg-Lund's Fresh water Laboratory, Hillerod, Danmark. あるいは Danish Freshwater Biological Laboratory (of University of Copenhagen).
スライド(ガラス種板): S37 Weseuberg-Lund's Fresh water Laboratory, Hillerod, Danmark. あるいは Danish Freshwater Biological Laboratory (of University of Copenhagen).