angle steelangle valveanhydriteaniline point an ptanisotropicanisotropyannular augerannular boringannular circulationannular return velocity mud return velocityannular space flow annulus annulusannular velocityannulus pressure responsive aprannulus valveanomalyanthclinalanthracene oilsanti pollution measuresanti vortex baffle vortex beakeranticlical bulge anticlinal highanticlinal axis saddle axisanticlinal faultanticlinal flexureanticlinal fold up fold anticlineanticlinal lineanticlinal reservoiranticlinal structureanticlinal uplift anticlinal upwardanticlinorium composite anticlineanticorrosion coating antiocorrosive coatinganticorrosive anticorrosive agantanticorrosive paintantifouling composition antifouling paintantifreeze antifreezing agentantirolling deviceantirolling installationantiscour gravelantiscour perforated wallantiscour wallapparent dipapparent ground water levelapparent porsityapparent resistance of amediumapparent resistivityapparent slip throw total throwapparent stratigraphic gapapparent stratigraphic overlapapparent thickness of abedapparent throwaquifer aquiferous water bearing
