関武夫さんという自然を愛している方が生前持っていた森を、ご遺族の方が（財）埼玉県生態系保護協会に寄付したんですね。 The Sets accustomed to determine natural quantities fulfill the Peano axioms. It follows that each theorem that could be mentioned and proved in Peano arithmetic will also be proved in established principle. In my view, expressing gratitude implicitly invokes a higher abi... https://share.evernote.com/note/c1a29341-55fb-6549-054a-7664564039cf