| 1. 
  |  | Title: National Electrical Safety Code Handbook: A Discussion of the Grounding Rules, General Rules, and Parts 1, 2, 3, and 4 of the 3rd (1920) Through 1977 Editions of the National Electrical safety by Allen L. Clapp, American National Standards Institute  National Electrical Safety Code
 ISBN: 1559377240
 Publisher: Institute of Electrical & Electronics Enginee
 Pub. Date: 01 August, 1996
 List Price: $106.00
 Amazon.com Price: $106.00
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| 2. 
  |  | Title: National Electrical Safety Code Handbook: A Discussion of the Grounding Rules, General Rules, and Parts 1, 2, 3, and 4 of the 3rd (1920) Through 2002 Editions of the National Electrical safety by Allen L., P.E., P.L.S. Clapp
 ISBN: 0738127795
 Publisher: IEEE Standards Office
 Pub. Date: 01 August, 2001
 List Price: $115.00
 Amazon.com Price: $115.00
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| 3. 
  |  | Title: Nesc Handbook: Development and Application of the American National Standard, National Electrical Safety Code Grounding Rules, Genera by Allen L. Clapp
 ISBN: 0471807834
 Publisher: Institute of Electrical & Electronics Enginee
 Pub. Date: January, 1984
 List Price: $29.95
 Amazon.com Price: $29.95
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| 4. 
  |  | Title: National Electrical Safety Code Handbook by Allen L. Clapp
 ISBN: 999214243X
 Publisher: Thomson Learning
 Pub. Date: 01 September, 1992
 List Price: $106.00
 Amazon.com Price: $106.00
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| 5. 
  |  | Title: National Electrical Safety Code Handbook: A Discussion of the Gounding Rules, General Rules, and Parts 1,2,3, and 4 of the 3rd  (1920) Through 1993 Editions of the National Electrical Safety c by Allen Clapp, Allen L. Clapp
 ISBN: 1559372117
 Publisher: Institute of Electrical & Electronics Enginee
 Pub. Date: 01 January, 1998
 List Price: $102.00
 Amazon.com Price: $102.00
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