- Paperback: 60 pages
- Publisher: Amer Philosophical Society (November 1990)
- Language: English
- ISBN-10: 0871698064
- ISBN-13: 978-0871698063
- Product Dimensions: 10 x 6.5 x 0.5 inches
- Shipping Weight: 3.2 ounces
- Amazon Best Sellers Rank: #7,595,205 in Books (See Top 100 in Books)
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