A research project is being conducted to design, develop, test and evaluate instructional materials for on-the-job training of library personnel. The initial efforts are concentrated on the training requirements of scientific and technical libraries and involve development of three training course packages: technology in libraries, reference tools and services, and foreign and technical terminology. The objectives of the instruction are to develop higher levels of task-oriented skills in professional and nonprofessional library personnel and will emphasize both the substance to be learned and the act of learning itself. The course packages are being developed as modular units, and the course materials will exploit several media, including audiovisual aids and conventional paper materials. At this stage of the project, these five units have been designed and are being produced: a first unit in system analysis, three units dealing with reference materials, and one unit in Russian transliteration. Appendixes include a detailed specification for the system analysis unit, descriptions of two units in reference tools, and a selected bibliography of 51 items from the preliminary literature review. (Author/JB)