References
- Environmental Communications Program. 1981 . Hazardous waste: Two games for teaching about the problem , Columbus : Ohio Cooperative Extension Service Bulletin 703 .
- Former , R. W. , Reil , G. and Leach , S. 1986 . Yellow perch in Lake Erie , Columbus : Ohio Sea Grant Education Program .
- Lin , Leslie. Y. , ed. 1986 . Coral reef teaching kit , Washington , DC : World Wildlife Fund .