📁 皮伊特赫阿吉奥尔阿斯
This category lists pages and sites about the live and discoveries of the Greek philosopher and mathematician Pythagoras (582?-500? B.C.), who contended that most things could be understood through math.
条目 (3+)
Fact Monster Homework Center For Science
http://www.factmonster.com/homework/hwscience.html
Brent Goose
https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/brent-goose