共 50 条
- [3] CLEAN AIR CONGRESS AND EXHIBITION - OCTOBER 13 TO 17 1969 IN DUSSELDORF BRENNSTOFF-WARME-KRAFT, 1970, 22 (02): : 69 - &
- [4] CONGRES INTERNATIONAL SUR LAIR PUR (INTERNATIONAL CLEAN AIR CONGRESS) REVUE GENERALE DE THERMIQUE, 1967, 6 (62): : 180 - &
- [8] 4TH INTERNATIONAL CLEAN-AIR CONGRESS - SUMMARY OF ACTIVITIES JOURNAL OF THE AIR POLLUTION CONTROL ASSOCIATION, 1977, 27 (08): : 735 - 746
- [9] SECOND INTERNATIONAL CLEAN AIR-CONGRESS IN WASHINGTON DC, DECEMBER 1970 STAHL UND EISEN, 1971, 91 (09): : 515 - &
- [10] DUSSELDORF CONGRESS AND EXHIBITION - PURIFICATION OF AIR 1969 METEOROLOGISCHE RUNDSCHAU, 1970, 23 (03): : 94 - +