Neal, John Lloyd; Wright, Ernest, 1899-; Bollen, Walter Beno, 1896-; Oregon State University. Forest Research Laboratory(Corvallis, Or. : Forest Management Research, Forest Research Laboratory, Oregon State University, 1965-02)
Wright, Ernest, 1899-; Oregon State University. Forest Research Laboratory(Corvallis, Ore. : Oregon State University. Forest Research Laboratory, 1971-06)
