TY - BOOK AU - Lal D Ed. ED - PROCEEDING OF THE INTERNATIONAL SCHOOL OF PHYSICS ENRICO FERMI (26 J- JUL : Villa Monastero) TI - Early solar system processes and the present solar system T2 - Italian physical society; 73 U1 - B9:3p1,N78, M0 PY - 1980/// CY - Amsterdam PB - North-Holland KW - Astronomy ER -