Oceanica -- See Oceania Here are entered comprehensive works on the islands of the Pacific Ocean belonging to the island groups of Melanesia, Micronesia, and Polynesia. Comprehensive works on all of the islands of the Pacific Ocean as well as works on the islands of the North Pacific are entered under Islands of the Pacific.
Oceanographic Research -- See Oceanography Research This heading may be subdivided by the geographical area investigated, e.g. Oceanography--Research--Pacific Ocean. Where applicable, also make a second subject entry for the country conducting the research, .e.g. Oceanography--Research--Denmark.
