@book{ BA13806611,
 author = "Beaumont, John R.",
 title = "An introduction to market analysis",
 publisher = "[Environmental Publications, University of East Anglia]",
 year = "1991",
 series = "Concepts and techniques in modern geography",
 number = "53",
 URL = "https://ci.nii.ac.jp/ncid/BA13806611"
}
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