4 ms·
search for "filetype:pdf" http://scholar.google.com/scholar?hl=en&q=filetype%3Apdf http://scholar.google.com/scholar?hl=en&q=filetype%3Apdf
by frik 13y ago
search for "filetype:pdf"
http://scholar.google.com/scholar?hl=en&q=filetype%3Apdf http://scholar.google.com/scholar?hl=en&q=filetype%3Apdf
- nraynaud 13y agowonderful, thanks