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. 2011 Mar 20;88(1):145–161. doi: 10.1007/s11192-011-0368-z

Table 3.

Average number of authors and centres per document by area

No. Authors/doc. No.Centres/doc.
Biology and Biomedicine (n = 9,318) 6.69 (22.53) 2.59 (4.64)
Materials Science (n = 9,660) 4.85 (2.20) 2.30 (1.24)
Natural Resources (n = 6,102) 3.98 (2.77) 2.22 (1.55)

Data expressed as average (standard deviation)