How are you going to process. Dentists used film processers in the 70s-80s-90s that would not only take small dental film but also 4x5 or 5x7 film. If you don't have a method call a dental supply company and ask if any aging dentists still have one of these machines.
But I assume if you bought this lots you have a method. Good luck, we all want to see the results.
All frivolity aside, this could be an exciting find. Someone who went to that trouble must have thought their work worth preserving. Someone who exposed that many rolls back then would probably know what they were doing.