Ecology (1) Preservation (1) Counting (1) Conservation (1) Assaying (1) Indexes (1) Wealth (1) Spatial behavior (1) Ornithology (1) Matter (1) Life (1) Licenses (1) Geology--Statistical methods (1) Earth (Planet) (1) Birds (1) Mathematical models (1) Management (1) Technique (1) Valuation (1) Appreciation (1) Analysis, appreciation (1) Analysis (1) Rating of (1) Quality (1) Evaluation (1) Autorizaciones (1) Evaluación (1) Índices (1) Ornitología (1) Materia (1)