Limited (search only) v.18:no.3-12 1992:Mar.-Dec.
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Northwestern University
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Limited (search only) v.19:7-12 (July-Dec 1993)
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University of California
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Limited (search only) v.20:no.1-6 1994:Jan.-June
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Northwestern University
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Limited (search only) v.20:no.7-12 1994:July-Dec.
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Northwestern University
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Limited (search only) v.21:no.1-6 1995:Jan.-June
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Northwestern University
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Limited (search only) v.21:no.7-12 1995:July-Dec.
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Northwestern University
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Limited (search only) v.22:no.1-6 1996:Jan.-June
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Northwestern University
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Limited (search only) v.22:no.6-12 1996:June-Dec.
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Northwestern University
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Limited (search only) v.23:no.7-12 1997:July-Dec.
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Northwestern University
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Limited (search only) v.23:no.1-6 1997:Jan.-June
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Northwestern University
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Limited (search only) v.24:1-6 (Jan-June 1998)
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University of California
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Limited (search only) v.24:7-12 (July-Dec 1998)
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University of California
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Limited (search only) v.25:1-6 (Jan-June 1999)
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University of California
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Limited (search only) v.26 no.07-12 yr.2000
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University of California
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Limited (search only) v.27 no.07-12 yr.2001
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University of California
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Limited (search only) v.28:1-6 (Jan-June 2002)
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University of California
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Limited (search only) v.28:7-12 (July-Dec 2002)
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University of California
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Limited (search only) v.29 2003
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Northwestern University
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