We don't yet know of a public preservation copy of this work. You may be able to obtain a copy of this work to read from the publisher, platforms, or institutional libraries.
If you know of a legal, public version that we should archive, please let us know via "Save Paper Now".
A. G. Blair. "Energy Density of the Relic Radiation." Confrontation of Cosmological Theories with Observational Data (1974) 143-155