18 captures
10 May 2005 - 29 Dec 2023
May
NOV
Feb
20
2005
2008
2011
success
fail
About this capture
COLLECTED BY
Collection:
Common Crawl
Web crawl data from Common Crawl.
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20081120193438/http://www.doctortang.com/AP%20Chemistry/Lab%2004%20Quantitative%20Spectroscopy%20of%20Hydrogen%20Emission%20Spectrum.pdf