Title: Helium Research Center internal report
Description: "Twenty-two compressibility runs were made with helium at 0℗ʻ Celsius. Date from the twenty-two runs were fitted...by a non-linear least squares technique. Later they were fitted...by using a non-linear least squares method ... A description of the experimental apparatus and experimental procedure used to obtain data for the twenty-two runs, treatment of the experimental observations, and results of the least squares fitting of the data...are recorded in Helium Research Center Internal Report No. 88"--Leaves 4-5.
Subjects: Helium, Compressed Gases, Mathematical models