"Indicateurs et papiers réactifs." . . . . "Phenanthroline." . . "Phénanthroline." . "Phenanthroline and substituted phenanthroline indicators their preparation, properties, and applications to analysis"@en . . "Phenanthroline and substituted phenanthroline indicators : their preparation, properties, and applications to analysis"@en . . . . . . . "Phenanthroline and substituted phenanthroline indicators, their preparation, properties, and applications to analysis" . . . "Phenanthroline and substituted phenanthroline indicators. Their preparation, properties and applications to analysis" . . . . "Phenanthroline and substituted phenanthroline indicators : Their preparation, properties and applications to analysis" . "Phenanthroline and substituted phenanthroline indicators : their preparation, properties and applications to analysis"@en . . . "Phenanthroline and substituted phenanthroline indicators; their preparation, properties, and applications to analysis" . .