AT&T BSTJ 1969, February, March; pp. 321-816 in 2 individual issues; diagrams, references.
Condition: Good to Very Good overall, light-blue heavy paper covers, spines a bit sunned, rear cover of March issue with small brown discoloration as if newspaper etc. had been stored against it; and fold/small tear along outer margin cover and first title pages of March issue. The bindings are tight and secure, pages clean, unmarked.
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