[en] There were 217 (66) events of the process νp→νp (anti νp→antiνp) with an estimated background of 82 (28). The neutral to charged current ratios are sigma(νp→νp)/sigma(νn→μ^-p) = 0.11 +- 0.02 and sigma(anti νp → anti νp)/sigma (anti νp → μ⁺n) = 0.19 +- 0.05 for 0.40 < q² < 0.90 (GeV/c)² where -q² is the square of the four momentum transfer to the proton. These yield sigma(anti νp → anti νp)(νp→νp) = 0.53 +- 0.17. The errors quoted are statistical; systematic uncertainties are less than 20%. This value of the cross section ratio establishes at a level of approximately 2 1/2 standard deviations that the neutral current is neither pure V, A, T or any mixture of S and P. The present measurements place significant restrictions on the neutral current coupling constants, element of/sub L/(u), element of/sub L/(d), element of/sub R/(u), element of/sub R/(d). The allowed domains are presented including a discussion of the effect of systematic errors. 27 references