Conservation : replacing quality with quality as a goal for global management /

Ижил төстэй зүйлс

• Biological management and conservation : ecological theory, application and planning/
  -н: 453608 Usher, M. B.
  Хэвлэсэн: (1973)
• Environmental conservation /
  -н: Dasmann, Raymond Frederic, 1919-
  Хэвлэсэн: (1976)
• Changing environments; Conservation
  -н: Open University. Environment Course Team
  Хэвлэсэн: (1972)
• Conservation of natural resources /
  -н: 182640 Klee, Gary A.
  Хэвлэсэн: (1990)
• Environmental geomorphology and landscape conservation /
  -н: Coates, Donald Robert, 1922-
  Хэвлэсэн: (1972)