| ashrae |
201,000/mo |
$1.37 |
| ansi standards |
49,500/mo |
$1.27 |
| international building code |
450,000/mo |
$1.54 |
| nace |
1,500,000/mo |
$3.89 |
| standards |
16,600,000/mo |
$2.22 |
| iso standards |
165,000/mo |
$3.16 |
| nfpa codes |
12,100/mo |
$1.32 |
| nfpa 58 |
4,400/mo |
$1.18 |
| nccls |
14,800/mo |
$0.77 |
| nfpa 30 |
8,100/mo |
$1.56 |
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