http://vocab.lternet.edu/vocab/vocab/http://vocab.lternet.edu/vocab/vocab/skos/263imagery http://vocab.lternet.edu/vocab/vocab/skos/263 aerial imagery NT http://vocab.lternet.edu/vocab/vocab/skos/263 satellite imagery NT http://vocab.lternet.edu/vocab/vocab/skos/263 photo point imagery NT http://vocab.lternet.edu/vocab/vocab/skos/263 spatial methods BT