Application of Mul;tiple Regression and Princilpal Component Analysis to Growth Prediction and Phytosociological Studies of Black Spruce Stands by vallee, Gilles

Subjects: “…Methods fo Vegetation study , Ecologic Factors, Tree Stratum…”

Animal Ecology: With especial reference to insects by Chapman, Royal N.

Subjects: “…Ecological of animal Light as an ecological factor, Temperature as an ecological factor, Environmental, Biotic factors in autecology, Communities of the grass or herb stratum, Animal species living together…”