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Figure 1
Three macro-world illustrations that were found during one afternoon in Brooklyn. (a) Fm[\overline 3]m limes, (b) Cmmm bricks, (c) P4mm ceramic tiles. Gravity has a way of squeezing out groups that are in the main organized on glide-planes or screw axes.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 79| Part 3| March 2023| Pages 124-128
https://doi.org/10.1107/S2056989023000786
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