The book covers three major topics crucial for contemporary syntactic research. Firstly, it offers a sketch of a general theory of dependency in natural language. Different types of linguistic dependencies are distinguished (semantic, syntactic, and morphological), the criteria for their recognition are formulated, and all possible combinations are discussed in some detail. Secondly, it demonstrates the application of the general theory in two specific domains: establishing the system of Surface-Syntactic Relations in French and linear positioning of clitics in Serbian. Thirdly, it presents a formal sketch of Head-Driven Phrase-Structure Grammar modelled in terms of syntactic dependencies.