1. FORTY YEARS FROM THE BEGINNING OF THE RESEARCH IN THE FIELD OF PLANT TISSUE AND CELL CULTURE IN ROMANIA. Authors: CONSTANTIN CRĂCIUN, AUREL ARDELEAN, DORINA CACHIȚĂ-COSMA.2. PLANT STEM CELLS – THEORETICAL AND PRACTICAL STUDIES. Authors: CONSTANTIN CRĂCIUN, DORINA CACHIȚĂ-COSMA.