Those who impose a Condition differ as to what sort or degree of access is required, as well (as) to just what it is to which one must have access of the proper sort.

As is commonly used as a conjunction, preposition, or adverb. What other ways does it work?

Both of the uses is a preposition, and in the above sentence both uses cannot be used. In the first case, “as to is being used as a preposition to the noun “degree”. In the second case, “as well as” is being used as a multi word preposition to… Well something. Is the author really mincing the words and the people around me? Not sure about access, but if I suppose entry as “access” will be a noun in English. As well as” means “in addition”.

Is there no need to add more “as” after one word?

Do we need one more as? I would answer yes. When following I spelled my sentence what follows as a “as”?

= preposition, adjective

= noun that the adjective refers to

= preposition, pronoun refers to antecedent,

refers to the antecedent. **This sentence was originally for *Preposition, adjective,