%0 Journal Article %T THE PINE UNDERGROWTH DENSITY INFLUENCE ON BIATORELLA PINE CANCER PREVALENCE %A Safronova, I.E. %A Sorokin, N.D. %K Biatorella cancer, disease prevalence, pine undergrowth, infection, cutting down, maternal crown layer %J Bulletin of KSAU %D 2013 %N %P 5 %I Krasnoyarsk State Agrarian University