Title:Cultural conditions required for the induction of an adaptive acid-tolerance response (ATR) in Sinorhizobium meliloti and the question as to whether or not the ATR helps rhizobia improve their symbiosis with alfalfa at low pH
Title:Gender differences in competitiveness and risk taking: comparing children in Colombia and Sweden / Diferencias de género en competitividad y riesgo: comparación de niños en Colombia y Suecia