"Douglas Advanced Research Laboratories." . . "Geluidsgolven." . . "Holography Congresses." . . "Holografie." . . . . . . . . . . . . . "Acoustical holography : proceedings" . . . . . . "Acoustical holography; proceedings"@en . "Acoustical holography; proceedings" . . . "Acoustical holography : proceedings of the ... International Symposium on Acoustical Holography"@en . . . . "Conference papers and proceedings"@en . . "Conference papers and proceedings" . . . . "Conference proceedings"@en . "Conference proceedings" . . . "Acoustical holography proceedings"@en . . . . . . . . . "Akoestische holografie." . . "Ultrasonics Congresses." . . "Acoustic holography." . . "International Symposium on Acoustical Holography." . . . "Acoustic holography Congresses." . . "Acoustics Congresses." . .