TY - BOOK AU - Keyfitz,Nathan TI - Introduction to the mathematics of population T2 - Addison-Wesley series in behavioral science: quantitative methods SN - 0201036843 U1 - 312.0184 22 PY - 1968///] CY - Reading, Mass. PB - Addison-Wesley Pub. Co. KW - Demography KW - Mathematical models N1 - Bibliography: p. 413-431 ER -