00552cam a22002294a 4500 AR-SsjUIB 20250710162748.0 250429s1972 xxu 000 0 eng d AR-SsjUIB AR-SsjUIB eng xxu 622 Pfleider, Eugene P. 17021 Surface mining. New York : AIME, 1972. Mudd series Minería lemb 1372 Libro unescot 14 LB cdu dbfi 1998-10-30 13518 13518 0 0 cdu 0 0 ING ING 2025-07-10 Compra 6791 0 622 PFL BFI.6791 2025-07-10 00:00:00 1 2025-07-10 LB 0 0 cdu 0 0 ING ING 2025-07-10 Compra 7847 0 622 PFL BFI.7847 2025-07-10 00:00:00 2 2025-07-10 LB 0 0 cdu 0 0 ING ING 2025-07-10 Compra 7848 0 622 PFL BFI.7848 2025-07-10 00:00:00 3 2025-07-10 LB