Fundamentals of dislocations in crystalline solids and the dynamical behavior of dislocations. Topics covered include: elastic properties of dislocations, dislocation interactions, intersections, arrays, nucleation and sources. Thermally activated glide and climb are addressed along with statistical aspects of dislocation ? obstacle interactions. Partial dislocations, faults and unique aspects of dislocations in metals, semiconductors, ceramics and intermetallics are covered.