1. ECONOMIC ASPECTS OF USING QUARTZ RAW MATERIALS. Authors: CRISTINA TAPALAGA-INOAN.2. LATE 20TH CENTURY INFLUENCES ON FOOD INDUSTRY. Authors: DRAGOŞ BIRLEA, CRISTINA TAPALAGA-INOAN.3. RATIONALE OF SETTING UP JOINT VENTURES IN ROMANIA – ANALYSIS. Authors: CRISTINA TAPALAGA-INOAN, MIRELA POPA.