00297nam a2200109 a 450000500170000008200130001710000170003024500380004726000520008530000200013749000300015720251203090718.0  a577bWET  aSpecht, R.L.  aheathlands and related shrublands  aNew YorkbElsevier Scientific Publicationc1979  a497pc26cm.bHB  aEcosystem of the world 9A