This text deals with a central issue in modern linguistic theory: that of locality as expressed in the behaviour of non-overt categories. Grosu presents a detailed study of free relatives, nominal phrases, and a variety of constructions in Rumanian involving mill operators. This work should be of interest not only to linguists working on theoretical issues, but also to linguists interested in descriptive issues. It is estimated that Grosu's original detailed studies of major constructions in Rumanian - a language not yet thoroughly investigated in modern linguistics - will prove formative.