Winter and spring habitat selection of Red deer (Cervus elaphus alxaicus) in the Helan Mountains, China Habitat selection of sympatric blue sheep (Pseudois nayaur) and red deer (Cervus elaphus alxaicus) during rutting periods in the Helan Mountains, China Studies on Phenotypic Allocation of Melia azedarach Discriminant the Geographical Origin of Hangzhou white Chrysanthemum Based on Mineral Elements CORRELATIONS BETWEEN THE GROWTH VIGOUR AND ISOZYME PHENOTYPES OF PINUS MASSONIANA LAMB