CPP Ceramic Type Ontology — Plain Gray Ontology: CPP Ceramic Type Ontology Parent: Little Colorado Grayware Datasets that use Plain Gray RCAP Ceramic Database CARP Ceramic Database (Slipped Ceramics, Excav & Survey) HARP Excavation Ceramic Database HARP Survey Ceramic Database OBAP Ceramic Database ULCPP Ceramic Database EMVPP Ceramic Database CARP Ceramic Database (Utility, Excavation)