TY JOUR TI IMPROVEMENT OF THE TECHNOLOGY OF COFFEE EXTRACTION KW coffee KW grain size composition of coffee KW method of diffusion battery KW cold extraction JO Vestnik of Astrakhan State Technical University AU Shtefanova, O.. AU Lisitsyn, V.. AU Razymovkiy, D.. AU Lysova, V.. PY 2014 IS 2014 PB Astrakhan State Technical University