secondary literature
secondary source
(baseball) A flat, pentagonal, rubber object placed at the center of the batter's box, which is used as a basis for judging pitched strikes and balls, and the touching of which by a runner advancin...
A river in Maine, United States. Ellipsis of Machias River.
the state of being a cub / (by extension) youth
セミナーの準備のために、学術的な議論を理解するためにいくつかの二次文献を精読しました。
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DiQt
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