TY  - BOOK
AU  - North,Oliver S.
TI  - Mineral Processing Patents Issued During 1966
U1  - 669.0027 19
PY  - 1967///
CY  - Virginia
PB  - Oliver D. North
KW  - Mineral industries
KW  - Patents
KW  - Periodicals
N1  - Includes indexs
ER  -