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API Spec 14L (R2012)Specification for Lock Mandrels and Landing Nipples, Second Editionstandard by American Petroleum Institute, 07/01/2007
API Spec 14A-1994Subsurface Safety Valve Equipmentstandard by American Petroleum Institute, 12/01/1994
API Spec 14A ErrataErrata for Specification for Subsurface Safety Valve Equipment, Twelfth EditionAmendment by American Petroleum Institute, 07/01/2015
API Spec 14A Addendum 1Addendum 1 for Specification for Subsurface Safety Valve Equipment, Twelfth EditionAmendment by American Petroleum Institute, 06/01/2017
API Spec 14A (R2012)Specification for Subsurface Safety Valve Equipment, 11th Editionstandard by American Petroleum Institute, 10/01/2005
API Spec 14ASpecification for Subsurface Safety Valve Equipment, Twelfth Edition, Includes Errata (July, 2015)standard by American Petroleum Institute, 01/01/2015
API Spec 14ASubsurface Safety Valve Equipmentstandard by American Petroleum Institute, 05/15/2000
API Spec 13A Errata 4Errata 4 for Specification for Drilling Fluid Materials, Eighteenth EditionAmendment by American Petroleum Institute, 10/01/2016
API Spec 13A ErrataErrata 1, 2 & 3 for Specification for Drilling Fluid Materials, Eighteenth EditionAmendment by American Petroleum Institute, 07/01/2015
API Spec 13A ErrataErrata 1 & 2 for Specification for Drilling Fluid Materials, Eighteenth Editionstandard by American Petroleum Institute, 05/01/2015
API Spec 13A ErrataErrata for Specification for Drilling Fluid Materials, Eighteenth Editionstandard by American Petroleum Institute, 08/01/2014
API Spec 13A ErrataErrata to Specification for Drilling-Fluid Materials, Seventeenth EditionAmendment by American Petroleum Institute, 10/01/2008