TY JOUR TI THE REGULARITIES OF THE FORM CHANGE OF THE PINE SUBGROWTH TRUNKS IN THE CONDITIONS OF THE EAST SAYAN NORTHERN SLOPE KW small-sized trunks KW Scotch pine KW rise number KW form coefficients JO Bulletin of KSAU AU Ufimtseva, E.A. AU Shevelev, S.L. PY 2014 IS PB Krasnoyarsk State Agrarian University