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Journal of Applied Sciences 2 ( 4 ): 433 - 436 , 2002
Sandra Phillips and Nancy J. Scannell
Journal of Applied Sciences 3 ( 1 ): 4 - 8 , 2003
Judy G. Newton, Nancy J. Scannell and Rubina Ohanian
Journal of Applied Sciences 1 ( 4 ): 552 - 559 , 2001