TY - BOOK AU - Bartocci C ED - International Conference on Differential Geometric Methods in Theoretical Physics( 19th : 1990 : Italy ) ED - International Conference on Differential Geometric Methods in Theoretical Physics 19th TI - Differential geometric methods in theoretical physics : proceedings U1 - 530.15 PY - 1991/// CY - Berlin PB - Springer Verlag KW - Geometric methods KW - Physics ER -