Monday.

Here are the fares http://www.ratp.fr/Voy_q/f_voy.htm

Note that you only find them on the French language pages. Some guidebooks may say they are not for tourists, but as obvious tourists we went into a Tourist Information office and asked where to buy them and were told to get them at a metro station. The woman there (the Metro station) spoke no English, but we got on.

You need photos to put in the wallet you get.

Doug Weller Birmingham, England http://www.ramtops.demon.co.uk