h000487.zip   SEPTIC SYSTEM TUTORIAL Hypertext based education system
h000488a.zip  PRIVATE WATER SYSTEM EDUCATION hypertext tutorial (1 of 2)
h000488b.zip  PRIVATE WATER SYSTEM EDUCATION hypertext tutorial (2 of 2)
h002163.zip   HYDROFLO linear hydraulic design tool
n002164.zip   HYDRONET design tool for complex hydraulic networks
n004381.zip   HARDY CROSS ANALYSIS design simple pipe distribution nets
n004393.zip   PARTFULL part full sloped drains & sewers calculations
n004794.zip   FLUID FLOW CALCULATIONS solve fluid flow problems