d라이브러리
"records"(으)로 총 12건 검색되었습니다.- 윤초(閏秒)과학동아 198806
- should have been seen a few centuries ago, we find that the eclipse was seen-but miles away.Studying past astronomical records just gives us a notion how the rotation rate slows down on the ave ...
- 책의 혁명과학동아 198712
- thing, but the form in which the word is presented can change and has changed. The oldest written documents(tax lists, records, letters, and, eventually, accounts or tales long enough to be con ...
