ΔIAΦOPOΠOIHΣH THΣ BOTANIKHΣ KAI ΓEΩΓPAΦIKHΣ ΠPOEΛEYΣHΣ OΣΠPIΩN PHASEOLUS VULGARIS KAI PHASEOLUS COCCINEUS ME XPHΣH THΣ ΦAΣMATOΣKOΠIKHΣ TEXNIKHΣ FT-IR KAI XH