00446nam a2200169Ia 4500082002000000100001900020245003400039260003200073300001300105500000500118690000600123700000500129952010100134964001700235921000900252999001500261  a333.75bW929.PF  aWorrell, A. C.  aPrinciples of forest policyb  aNew YorkbMcGraw-Hillc1970  ax, 243p.  a  a   a  00104070aISIbISId1998-08-26l0o333.75 W929.PFpDP4744r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a6211  c6211d6211