TY  - RPRT
A1  - Vaupel, J.W.
A1  - Gambill, B.A.
A1  - A.I., Yashin
T1  - Thousands of data at a glance: Shaded contour maps of demographic surfaces
Y1  - 1987
PB  - IIASA
CY  - Laxenburg
T3  - IIASA Research Report RR-87-016

ER  -