archive.org has a scanned copy of a Photo Lab Index (Morgan & Morgan, but "photo lab index" is much easier to search for) from 1979 or so that is an interesting reference, though it may be published too late for this film. Of course with any film this old you're sort of guessing. https://archive.org/details/aa143-PhotoLabIndexCompactEdition/mode/2up
I only meant guessing at ISO and developing times. The Photo Lab Index from 1979 has recommendations for some Agfa films but it doesn't list Gevapan, which probably was not still in production in 1979.
No, it wasn't.
Gevaert-Agfa continued for a while the production of consumer films under their old product-name and packaging. But then the product portfolios of the merged manufacturers were reorganised and Agfa-Gevaert basically got all consumer products and Gevaert-Agfa all non-consumer products to manufacture. By this some products were cancelled, some shifted to the other manufacturer twin.