TY - CPAPER AU - Vyacheslav Sirotkin AU - Sergey Vasyukov AU - Bulat Usmanov TI - THE POSSIBILITY OF USING SPECTROGRAPHIC DATA TO ASSESS SOILS FERTILITY T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Water Resources. Forest, Marine and Ocean Ecosystems PY - 2017 SP - 639 EP - 646 DO - 10.5593/sgem2017/32/s13.083 PB - STEF92 Technology ER -