Tundra Discoveries 在线电子书 图书标签:
发表于2024-11-27
Tundra Discoveries 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
At one time of the year, there is frigid cold, almost twenty-four-hour-a-day darkness. But six months later, there is nearly constant sunlight, warmth, and constant activity. Month by month, text and illustrations follow the changes, with a thermometer to trace the changing temperature, and hours of daylight tracked on a calendar.
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Tundra Discoveries 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024