Invention of an easy-to-install sumo mat: Securing safety for schoolchildren doing sumo
OZAWA, Yuji, OHKAWA, Yasutaka, ISHIBASHI, Goshi, KITAI, Kazutoshi, ABE, Jun
Published in Research Journal of Budo (30.09.2011)
Published in Research Journal of Budo (30.09.2011)
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