Data Search of Major Classification
| Major Class | Parent | Descriptor | Acronym | Synonym | Chinese Descriptor | Spanish Descriptor | Reference | Definition |
| Other Subject | D2 Standard for Ballast Water Treatment | Norma D2 para el tratamiento del agua de lastre |
| Major Class | Parent | Descriptor | Acronym | Synonym | Chinese Descriptor | Spanish Descriptor | Reference | Definition |
| None defined at this time . . . | ||||||||