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Message-ID: <OF99544636.DFF0A3E8-ON86257AC4.004CE3AF-86257AC4.00513FBF@usgs.gov>
Date: 2012-11-28T14:47:25Z
From: Jean V Adams
Subject: Using factor variables with overlapping categories
In-Reply-To: <1354059653884-4651054.post@n4.nabble.com>

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