Talk:RA-4 process

Hey Ron... Give me a hand here! Discpad 21:41, 22 February 2007 (UTC) Dan

CD?
Which color developing agent does RA-4 use? I presume either CD-3 or CD-4. I would like to link to the appropriate article. Gah4 (talk) 05:40, 10 January 2020 (UTC)