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no DOI — not checkedE.P.A. Report No. NTID 300
no DOI — not checkedNoise Control
no DOI — not checkedANSI S1.4-1971
no DOI — not checkedSound and Vibration
no DOI — not checkedJournal of Sound and Vibration
no DOI — not checkedInter-Noise 73, Proceedings of International Conference on Noise Control Engineering
no DOI — not checkedJournal of Sound and Vibration
no DOI — not checked10.1016/0022-460X(75)90311-9_BIB8
no DOI — not checked10.1016/0022-460X(75)90311-9_BIB9
no DOI — not checked10.1016/0022-460X(75)90311-9_BIB10
no DOI — not checkedBolt Beranek and Newman Inc. Technical Report No. 821
no DOI — not checkedFAA-NO-70-9
no DOI — not checkedFederal Aviation Regulations Part 36
no DOI — not checkedE.P.A. Report No. NTID 73.4
no DOI — not checkedE.P.A. Report No. 550/9-74-004
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