The Effectiveness of Low Frequency Electromagnetic Field and Hydrogel Influence on Survival Rate and Growth of Red Oak (Quercus rubra L.) Annual Seedlings Journal title: Lesnoy Zhurnal (Russian Forestry Journal) Authors: A.I. Smirnov, F.S. Orlov, P.A. Aksenov, Yu.V. Yaskov Subject(s): Technology, Forestry