A New Fossil Species of the Genus Cyclophorus (Gastropoda: Caenogastropoda: Cyclophoridae) from the Miocene Bihoku Group, Okayama Prefecture, Southwestern Japan von Hirano, Takahiro, Matsuoka, Keiji

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A new species of the genus Heterogen (Mollusca: Caenogastropoda: Viviparidae) from the Pleistocene Katata Formation of the Kobiwako Group, Shiga Prefecture, central Japan von Matsuoka, Keiji, Hirano, Takahiro

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Role of ancient lakes in genetic and phenotypic diversification of freshwater snails von Hirano, Takahiro, Saito, Takumi, Tsunamoto, Yoshihiro, Koseki, Joichiro, Prozorova, Larisa, Do, Van Tu, Matsuoka, Keiji, Nakai, Katsuki, Suyama, Yoshihisa, Chiba, Satoshi

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Four new species of the genus Semisulcospira (Mollusca: Caenogastropoda: Semisulcospiridae) from the Plio–Pleistocene Kobiwako Group, Mie and Shiga Prefectures, central Japan von Matsuoka, Keiji, Miura, Osamu

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Pliocene Iga non-marine fauna of the Kobiwako Group von Matsuoka, Keiji, Inoue, Keisuke, Kawase, Motohiro

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The second record of freshwater sponge, Spongilla lacustris in Aichi Prefecture, Japan von Matsuoka, Keiji

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THREE-DIMENSIONAL NONSTEADY HEAT CONDUCTION ANALYSIS WITH THE FREEZING OR THAWING IN THE GROUND von MATSUOKA, Keiji, SUMITANI, Daisaku, OGURA, Hiroshi

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A new potamolepid freshwater sponge (Demospongiae) from the Miocene Nakamura Formation, central Japan von MATSUOKA, KEIJI, MASUDA, YOSHIKI

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岡山県の中新統備北層群から得られたヤマタニシ属 （腹足綱：新生腹足亜綱：ヤマタニシ科）化石の一新種 von 平野, 尚浩, 松岡, 敬二

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Pliocene Iga non-marine fauna of the Kobiwako Group von Matsuoka, Keiji, Inoue, Keisuke, Kawase, Motohiro

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Reports of freshwater animals from irrigation ponds of Toyohashi City, Aichi Prefecture, central Japan von Sakamoto, Hirokazu, Nishi, Hirotaka, Matsuoka, Keiji

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WIRING BOARD FOR PROBE CARD von MATSUOKA Keiji

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THREE-DIMENSIONAL NONSTEADY HEAT CONDUCTION ANALYSIS WITH THE FREEZING OR THAWING IN THE GROUND von MATSUOKA, Keiji, SUMITANI, Daisaku, OGURA, Hiroshi

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古琵琶湖層群の鮮新世伊賀非海生動物群 von 松岡, 敬二, 井上, 恵介, 川瀬, 基弘

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INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING SYSTEM AND INFORMATION PROCESSING METHOD von MATSUOKA KEIJI

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Middle Miocene-Pliocene freshwater gastropods of the Churia Group, west-central Nepal von DAMAYANTI, GURUNG, TAKAYASU, KATSUMI, MATSUOKA, KEIJI

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A new record of the freshwater mussel, Anodonta (Anemina) arcaeformis (Unionidae) from the Mikawa region, central Japan von Nishi, Hirotaka, Sakamoto, Hirokazu, Matsuoka, Keiji

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Records of freshwater fishes, molluscs and sponge from irrigation ponds of Toyohashi City, Aichi Prefecture, central Japan von Sakamoto, Hirokazu, Nishi, Hirotaka, Matsuoka, Keiji

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Effect evaluation of unfrozen water on heat transfer with the nonsteady heat conduction analysis von MATSUOKA, Keiji, UEDA, Yasushi, SUMITANI, Daisaku

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Sheet feeding device and image forming apparatus von MATSUOKA KEIJI

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