| Evaporative Coolers | Comments |
|---|---|
| EVAPORATIVE COOLERS: In Louisiana High humidity limits the effectiveness. A78-309 | 0 |
| EVAPORATIVE COOLERS: Used Throughout the U.s.a. The fan and pad cooling system is the most popular. A80-356 | 0 |
| EVAPORATIVE COOLERS: Use of Copper Sulphate on the Wet Pad Use 2 ppm. in the water periodically, A78-403 | 0 |