Demographic techniques /
Pollard, A H
Demographic techniques / by A H Pollard and G N Pollard - Australia : Pergamon press, 1974. - 161p. :
Demographic
305.26 / POL/D
Demographic techniques / by A H Pollard and G N Pollard - Australia : Pergamon press, 1974. - 161p. :
Demographic
305.26 / POL/D