H. L. Armstrong

Solar energy system performance evaluation. Aratex Services, Inc. , industrial laundry, Fresno, California, June--September 1978

L. J. Murphy, V. S. Sohoni, H. L. Armstrong, 1978 .

On the Nature of a Physical Theory

H. L. Armstrong, H. Armstrong, 1966 .

Waves and Beaches

Willard Bascom, H. L. Armstrong, W. Bascom, 1964 .

The Fudge Factor

Richard S. Westfall, H. L. Armstrong, R. Westfall, 1973, Science.

The Oscillating Spring and Weight—An Experiment Often Misinterpreted

H. L. Armstrong, 1969 .