"SPIE (Society of Photo - optical Instrumentation Engineers) the International Society for Optical." . . "European Congress on Optics (2nd : 1989 : Paris, France)" . . . "ECO2 (1989 : Paris, France)" . . . "European conference on optics (2 ; 1989 ; Paris)." . . . "Lasers de puissance." . . . . "Electronic books" . "Kongreß"@en . . "High power laser and laser machining technology : ECO 2, 25-28 April 1989, Paris, France" . . "High power lasers and laser machining technology : ECO2, 25-28 April 1989, Paris, France"@en . . . . . . "High power lasers and laser machining technology : 25-28 April 1989, Paris, France"@en . . "High power lasers and laser machining technology proceedings : 25-28 April 1989, Paris, France" . "High power lasers and laser machining technology ECO2, 25-28 April 1989, Paris, France" . "Paris (1989)"@en . . . "High power lasers and laser machining technology : ECO 2, 25-28 April 1989, Paris, France"@en . . "Conference proceedings"@en . . . . . . . . "High power lasers and laser machining technology"@en . . . . . "High power lasers and laser machining technology : proceedings" . . . . . "Conference papers and proceedings" . "Conference papers and proceedings"@en . . . . "High power lasers and laser machining technology : proceedings : 25-28 April 1989, Paris, France" . . . . . . . . . . . . . . . . . "High power lasers and laser machining technology : Conference : Papers"@en . "High Power Lasers and laser Machining Technology : ECO 2" . . . "High Power Lasers and laser Machining TechnologyECO 2 (1989.04.25-28 : Paris)" . . . "European Congress on Optics." . . . "Kongreß." . . "Lasertechnologie." . . "Hochleistungslaser." . . "High power lasers Congresses." . . "ANRT (Association Nationale de la Recherche Technique)" . . "EPS (European Physical Society)" . . "Engineering." . . . .