Alphabetical listing of categories: O

field observation -> field inventory and monitoring (133) ODDF binary grid format (14) ODS -> OpenDocument spreadsheet (5) offices -> buildings (5) official communications (1) lists of publications -> catalogs and indexes (2) collection of specimens -> specimen collecting (2) bodies of water -> hydrographic features (10) OGC WFS (67) OGC WMS (73) olive oil mills -> industrial sites (5) oil refineries -> industrial sites (5) oil wells -> wells (4) olive oil mills -> industrial sites (5) OpenDocument spreadsheet (5) open pit mines -> mine sites (67) optical microscopy (1) ore deposits (metallic) -> metallic ores (55) ore deposits (non-metallic) -> nonmetallic mineral resources (28) ore formation (10) metallic ores (55) ore treatment plants -> industrial sites (5) organism groupings (non-taxonomic) (4) biological organisms -> organisms (3) organisms (3) orienteering -> geolocation measurement (1) Os -> osmium (3) osmium (3) outfall -> contamination and pollution (36) overfalls -> hydrographic features (10) intermittent oxbow lakes -> lakes (4) oxbow lakes -> lakes (4) dissolved oxygen -> oxygen content (water) (4) oxygen content (water) (4) oxygen isotope analysis (3)

Alphabetical index of categories: O