Crossword clues for Guidelines: Abbr. 4 lettersAnswerClueSTDSQuality control guidelines: Abbr.STDSGuidelines: Abbr.STDSHandbook guidelines: Abbr.STDSAgreed-on guidelines: Abbr.USDADietary guideline provider: Abbr.ERAPitching guideline: Abbr.STDGuideline: Abbr.RDAIntake guideline: Abbr.RDANutritional guideline (Abbr.)