is
.
by 
.
p 669, first part of Equation 8 should be: 
.
p 669, first part of Equation 9 should be: 
.
p 673, Figure 8d: replace `+' sign by `-' sign in the two top
boxes.
and 
should be corrected: 
and 
.
and 
.
p 674, Equation 17: interchange 
with 
.
p 675, Equation 19: interchange 
with 
.
should be 
.
p 680, equation just above gray (red) line should be: 
.
in the expressions for the three
admittances by 
.
.
p 691, Problem 3: add sentence Structural symmetry is
sufficient but not necessary for electrical symmetry.
p 694, Figure P22: just before left resistor add a right arrow
labeled I.
to the right resistor.