THE SCIENCE OF CONTROLLABLE ENVIRONMENT
Reading edition
A PLEA FOR BETTER LIVING CONDITIONS AS A FIRST STEP TOWARD HIGHER HUMAN EFFICIENCY
The national annual unnecessary loss of capitalized net earnings is about $1,000,000,000.
Report on National Vitality
By ELLEN H. RICHARDS Author of Cost of Living Series, Art of Right Living, etc.
SECOND EDITION
WHITCOMB & BARROWS BOSTON, 1912
Copyright 1910 By Ellen H. Richards Thomas Todd Co., Printers 14 Beacon St., Boston