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Is There Finally a Replacement for Mercury Cells? It Looks that Way, But it Sure Took Some Doing

Is There Finally a Replacement for Mercury Cells? It Looks that Way, But it Sure Took Some Doing

Popular Photography Phototronics Finally! Wein develops a replacement for mercury cells. James Bailey   No subject that I’ve written about lo these many years has raised the hackles of so many readers of this... read more >