00406cam a22001217a 4500008004000000082001500040100002300055245008400078260007100162300000800233500002700241700001600268180718b1965   xxu||||| |||| 00| 0 eng d  aI5511 Sr38  aSrivastava, A.B.L.  aSuccessive difference covariance statisticcby A.B.L. Srivastava and S.C. Sahai  aDelhibNational Council of Educational Research and trainingc1965  a20p  aResearch Report No. II  aSahai, S.C.