What does NGHP stand for?

What does NGHP mean?

NGHP	National Gas Hydrate Programme Miscellaneous » Unclassified
NGHP	Natural Gas Heat Pumps Miscellaneous » Unclassified
NGHP	National Gas Hydrate Program Miscellaneous » Unclassified
NGHP	National Gas Hydrates Programme Miscellaneous » Unclassified
NGHP	National Gas Hydrates Program Miscellaneous » Unclassified
NGHP	Natural Gas Hydrates Programme Miscellaneous » Unclassified
NGHP	Native Graminoid And Herbaceous Perennials Miscellaneous » Unclassified