TY - BOOK ED - Varenna (Italy). Scuola internazionale di fisica ED - Societa italiana di fisica TI - Experimental gravitation T2 - Proceedings of the International School of Physics'Enrico Fermi' ; course 56 SN - 0123688566 PY - 1974/// CY - New York PB - Academic Press KW - Gravitation KW - Congresses N1 - At head of title: Italian Physical Society; Added t.p. in Italian; Course held July 17-29, 1972; Includes bibliographies ER -