Popular Electronics magazine: history
Recorded labels, editions and dated changes for this barcode. Back to the product record.
Recorded observations
Observation dates identify evidence. Applicability dates identify the period a product state is known to describe. National labels can coexist.
- June 1991 issue (cover story: Experiments in Electrochemistry) · evidence observed 1991-06
- January 1991 issue · evidence observed 1991-01
- September 1991 issue · evidence observed 1991-09
- March 1992 issue · evidence observed 1992-03
No dated product changes are established for this barcode yet. The observations above may describe different sources or coexisting labels; their differences do not by themselves establish a change over time.
Dates and sources are shown where recorded; gaps remain subject to review. The product page identifies the selected observation and its evidence.