Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 69 |
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Зміст
Why the 200Inch Teleschope By Elihu THOMSON I | 13 |
Antarctica By ISAIAH BOWMAN | 19 |
Studies on Weathering and Soil Formation in Tropical High | 45 |
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Proceedings of the American Philosophical Society Held ..., Томи 1 – 2 Повний перегляд - 1838 |
Загальні терміни та фрази
activity American Antarctic appears Aurignacian base become beds called cell chemical collected connection Constitution continued course cusp described determined direction discussion electrons equivalent evidence fact fauna field formation give given greater growth higher horizon important increase indicated individual interest iron knowledge known land learning less light lines living lower material matter means nature North observed occur organic original oxide paraconid perhaps period physical plants position possible present problem Professor reaction recent referred regarded region represented respect River sandstone season seems side similar Society soil solution South species stars surface Table temperature theory tion toxic United University upper