V. I. Ulomov, A. I. Zakharova, N. V. Ulomova. The Tashkent earthquake of April 26, 1966, and its repeated shocks . . . . . . . . . . . . . . . . . . . 567

CRYSTALLOGRAPHY

V. I. Voronkova, V. K. Ianovskii, V. A. Koptsik. The morphology and some properties of (Al_2O_3) crystals grown from tungstate melts . . . . . . . . . . 571
A. V. Chichagov, V. V. Iliukhin, N. V. Belov. The crystal structure of (NaSmSiO_4) 574

ERRATUM

In my note (Yu. K. Belyaev, “Confidence intervals for functions of many unknown parameters”), published in Doklady Akademii Nauk, vol. 169, no. 4, 1966, on p. 757, in formulas (8), (9), where (a_{k\alpha,d}) is printed, read (a_{k'\alpha,d}); in the first line from the bottom, where (b)}) is printed, read (b_{id,L

[
\left(a^*{id}=\max\right).} a_{k,d
]

Yu. K. Belyaev

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