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Science 9 March 1990:
Vol. 247. no. 4947, p. 1167
DOI: 10.1126/science.247.4947.1167-e
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Erratum

The cover caption for the issue of 9 February 1990 should have described the molecule on the cover as VPI-5 (Dow and Virginia Polytechnic Institute), not as ALPO-5 (Union Carbide). The first sentence of the caption should have read, "Superlattices of p-nitroaniline molecules self-assemble and orient within the polar, greater than 10 angstrom wide channels of VIP-5, a molecular sieve." The preferred orientation of the polar molecules occurs in both materials.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)