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bulgarian commercial measure cuprometric titration detergent solvent naphtha Dow-Jones transportation average index electromagnetic tamper Eremotropa wuana fragilized i-fered inclined cut-and-fill kappaphycus cottonii laid-up fleet Northern Thai Philadelphus purpurascens piercer roll polycolporate Pseudocarchariinae shipbuilding hall simple marginal gingivitis weft winding machine