In the fall of 1981 the Centro de Estudios Nucleares of the Universidad Nacional Aut6noma de Mexico organized an International School of Supersymmetry which took place in Mexico City from Dec. 14 to Dec. 18. The purpose of this School was to provide both students and researchers with an introduction to Supersymmetry as weIl as an overview of current research topics. A general introduction to the subject was given by Dr. Freedman while Dr. Grisaru discussed the superspace formulation of Supersym- metry and Supergravity. Applications of these ideas to Particle Physics were discussed by Dr. Ferrara and Dr. Witten. Finally, Dr. Bars presented the basic framework for the discussion of Supersym- metries in Nuclear Physics. We would like to take this opportunity to thank our lecturers for their enthusiastic participation in the School. The collaboration of Dr. Marcos Rosenbaum, Director of the Centro de Estudios Nucleares, and of all our colleagues in the Physics Department is also gratefully acknowledged. We also thank Mrs. Ma. Esther Colmenares for her careful typing of the manuscript and also for her unlimited patience in making all the necessary corrections. The help of Mr.
Jose Rangel with symbols and figures is also deeply appreciated.