Above that temperature, superconductivity did not exist.
"Long Ago, Far Away"
William Fitzgerald Jenkins AKA Murray Leinster
Recent experiments in superconductivity, using ceramic instead metal conductors have given us an exciting glimpse into what might be achieved for improving efficiency in the distribution of electric power.
"The Dawn of Amateur Radio in the U.K. and Greece A Personal View"
Norman F. Joly
superconductivity was getting a big push, as was biotechnology, optoelectronics, advanced materials.
"The Samurai Strategy"
Thomas Hoover