Pages: 72 pages construction and 102 pages for the installation
Availability: Extremely Rare
This is the first time that mentioned (4) 90 degree bends per run was the max. for a run of conduit.
Here is a picture of the construction rules and installation rules booklets. Notice the construction has marine work and the installation does not. This leads me to believe the installation book was published first. Also, there is a booklet that has marine work in it. Also, here is a supplement for Electric signs.