Correction [to "Doppler radar clutter"]

J.L. Farrell and R. L. Taylor, authors of the paper, "Doppler Radar Clutter," which appeared on pp. 162- 172 of the September, 1964, issue of these Transactions, have called the following to the attention of the Editor. The notation of CM
²
appearing at the end of (20) should be replaced by the symbol (cm
⁴
), denoting "centimeters to the fourth power," which represents the dimension of R
₀
⁴
. In the first paragraph of Appendix II, the phrase "gain beam gain" should be corrected to read "main beam gain."