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- 주제분류
- 자연과학 >생물ㆍ화학ㆍ환경 >환경과학
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- 등록일자
- 2009.09.15
For almost three decades, John Francis has been a planetwalker, traveling the globe by foot and sail with a message of environmental respect and responsibility (for 17 of those years without speaking). A funny, thoughtful talk with occasional banjo.