Water supply ; Sewerage ; Purification of water ; Sewage purification and disposal ; Irrigation
by
international correspondence schools
series:
Unknown
first published:
Unknown
A textbook on mechanical and electrical engineering
by
international correspondence schools
series:
Unknown
first published:
Unknown
Transmission systems for heavy traction ; Types of collectors for heavy traction ; Types of railway motors ; Speed control ; Single-phase speed control ; Electric locomotives ; Operating instructions ; Brakes ; Signal systems
by
international correspondence schools
series:
Unknown
first published:
Unknown
Geology of coal ; Examination of coal properties ; Drifts, slopes, and shafts ; Methods of working
by
international correspondence schools
series:
Unknown
first published:
Unknown
The farmer's handbook;
by
international correspondence schools
series:
Unknown
first published:
Unknown
Electric railway systems ; Electric-railway line construction ; Track construction ; Electric-railway calculations ; Railway motors ; Electric-car equipment ; Speed control ; Efficiency tests ; Switch-gear ; Electric stations ; Electric substations ; Oper
by
international correspondence schools
series:
Unknown
first published:
Unknown
Swine houses and equipment ; Types and breeds of swine ; Swine feeding and judging ; Swine breeding ; Types and breeds of sheep ; Sheep judging and breeding ; Sheep management ; Horse barns and paddocks ; Types, breeds, and market classes of horses ; Hors
by
international correspondence schools
series:
Unknown
first published:
Unknown
