Liboff errors (4th ed): Page 212, just above eq. 7.85: "In p-space" H(+i d/dk, hbar k) not -i Page 221, eq. 7.112: psi_refl exponent should be -i(kx + omega t) Page 352, eq. 9.14: should read (m = -l,...,+l in integral steps) Page 399, problem 9.42a: should read (2l_1 + 1)(2l_2 + 1) ... (2l_N + 1) Problem 10.5: the comma in the first ket shouldn't be there, and the italic 'f' should be an integral symbol. Table 10.2, spherical box column: j_l ( k_lna ) = 0 should be j_l ( k_ln a ) = 0 the 'a' should not be subscripted. (i.e. it's k_ln times a) Page 422, line between eqn's 10.69 and 10.70: "probability that measurement of L**2 finds the value hbar m" should be "probability that measurement of L_z finds the value hbar m"