000 00293pam a2200121a 44500
008 160408b1968 xxu||||| |||| 00| 0 eng d
082 _a669.4
_bIN8L
100 _aInt. Con. On Lead Venice(3rd
245 1 _aLEAD 68
260 _a
_bPergamon Press
_c1968
964 _gCIRC
997 _aA9767 C
999 _c246149
_d246149