STO


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STO

This is the retired HUGO symbol for what is now designated NSD1.
References in periodicals archive ?
168 x 108 48 STO M,A,S Sheet Radiant Cer,Cal,Qz Air,Water
180 x 84 30-80 STO M,A,S Sheet Radiant Cer,Cal,Qz Air,Water
240 x 120 36-54 STO A Sheet Radiant Ceramic Forced Air