TY  - BOOK
AU  - Peter De Vos, Calvin De Witt, Eugene Dykema, Vernon Ehlers and Loren Wilkinson
TI  - Earth Keeping In The Nineties
SN  - 0802805345
U1  - 261. 
PY  - 1991///
CY  - Grand Rapids, Michigan
PB  - William B. Eerdmans Publishing Company
ER  -