Removing Residue from Torginol Floors?

The floors in my kitchen and bath are poured, I believe it was called Torginol. They are old (built in 1968) and have built up residue over the years. Once yellow with flakes, they are now an ugly tan. Any ideas on how to clean them? I thought about calling an expert in to strip and polish them, but I don't really know who to call or if that process will help. I can't afford to replace them at this time.

By Carolyn from Marion, OH