A conceptual framework is presented in this paper within which it is possible to integrate and operationalize results of systems research. The framework is described in terms of an interactive general systems problem solver (GSPS). The paper consists of a discussion of both the motivation for developing GSPS and its implications, and a formal description of its basic aspects. An epistemologieal hierarchy of systems, which underlies the problem solver, and a complete specification of an example of a small version of GSPS are given in two appendices.