Huber, Friedo R 2 PbR' 2, R 2 PbR'R'', RPbR'R''R''', and R 4 - n PbH n (n = 1 to 3) compounds Pb : Lead : System number 47 Friedo Huber - 8. ed. - 1996 - XIII, 191 S. ISBN: 354093748X 038793748X Universal Decimal Class. No.: 546.546.3