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Richard Harwood, "Cambridge IGCSE™ Chemistry Coursebook with Digital Access (2 Years) Ed 5" English | ISBN: 1108951600 | 2021 | 478 pages | PDF | 107 MB
Backward Science: What was life like before world-changing discoveries? by Clive Gifford English | July 21, 2020 | ISBN : 0711249903 | 64 pages | True PDF | 12.7 MB