ext_21139 ([identity profile] spamsink.livejournal.com) wrote in [personal profile] i_eron 2017-06-15 06:52 am (UTC)

Ibid: The results reveal skipping as more efficient and less fatiguing than walking or running. Интересно, по каким причинам более взрослые особи не пользуются этим способом локомоции.
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