19th edition. Volume 2 of 5 volumes. Also available: on CD-ROM, 7th edition; and Online, 2nd edition
38th edition. Volume 1 of 5 volumes. Also available: on CD-ROM, 7th edition; and Online, 2nd edition
41st edition, 4 volumes
5th edition. Volume 4 of 4 volumes. Also available: on CD-ROM, 6th edition; and Online, 1st edition
18th edition. Volume 3 of 4 volumes. Also available: on CD-ROM, 6th edition; and Online, 1st edition
18th edition. Volume 2 of 4 volumes. Also available: on CD-ROM, 6th edition; and Online, 1st edition
37th edition. Volume 1 of 4 volumes. Also available: on CD-ROM, 6th edition; and Online, 1st edition
40th edition, 4 volumes
3rd edition, 3 volumes. Also available online, 1st edition
4th edition. Volume 4 of 4 volumes. Also available on CD-ROM 5th edition
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