Adjacent-numbered pages: BP646 BP647 BP648 BP649 BP650  *  BP652 BP653 BP654 BP655 BP656
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Harry E. Foundalis
Adjacent-numbered pages: BP647 BP648 BP649 BP650 BP651  *  BP653 BP654 BP655 BP656 BP657
. . .
Alternatively, BP pages on the OEBP with number less than or equal to 394 vs. other BP pages.
https://www.foundalis.com/res/bps/bpidx.htm
Adjacent-numbered pages: BP1189 BP1190 BP1191 BP1192 BP1193  *  BP1195 BP1196 BP1197 BP1198 BP1199
Foundalis's collection includes all Bongard Problems by Bongard.
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Aaron David Fairbanks