TY - BOOK AU - Helliwell,D.R. TI - Options in forestry: a review of literature on the effects of different tree species and silvicultural systems on soil, flora, fauna, visual amenity, and timber production SN - 0906527082 AV - SD391 .H46 1982 U1 - 634.9 19 PY - 1982/// CY - Chichester, Philadelphia, Pa. PB - Packard Pub., Distributed by International Ideas Inc. KW - Forests and forestry KW - Bibliography N1 - Distributor stamped on t.p; Bibliography: p. 50-60 ER -