TY - BOOK ID - 127862837 TI - The seen and unseen world of the fallen tree AU - Maser, Chris AU - Trappe, James M. PY - 1984 PB - Portland (Or.) : Department of agriculture. Forest service. Pacific northwest forest and range experiment station, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:127862837 AB - ER -