Fiber paper developers

Looking for info on Photographers Formulary substitutes for Selectol. Any recommendations. Will be using by itself and with Dektol/Liquidol, a number of fiber papers and eventually Selenium toned.

Selectol was Kodak's commercial version of D-52 a warm tone print developer. The formula is readily available on the web if you wish to mix your own.

Hey Gerald,
Thank you for the response. I do have the formula, but I was wondering about the Selectols from Photographers Formulary. I have used their chemicals in the past with much success - just not the Selectol.