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Science 28 September 1979:
Vol. 205. no. 4413, p. 1337
DOI: 10.1126/science.205.4413.1337-a
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Erratum

In the article "Dynamics of skeletal pattern formation in developing chick limb" by S. A. Newman and H. L. Frisch (17 Aug., p. 662), a clause was omitted. The clause should be inserted on page 667, third column, line 31, as follows: "[. . . respectively,] at t = t0, but subsequently we would like the gradient in the z direction to be maintained, and thus require

[see equation in pdf]

at z = 0 and z = d, for all times (radiation boundary conditions). [ The number. . .]."

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