00370nam a2200109Ia 450000500170000000800410001705000280005810000080008624501110009426000200020565000350022520251229180200.0251229s9999    xx            000 0 und d  aS 612.55 .C6D79 C1 SPEC  aFAO 0aDrylands development and combating desertificationb bibliogaraphic study of experiences in ChinacFAO FAO  aRomebFAOc1997  aDesertification -Control,China