Wintner and Cliff: Age and growth) determination of Carcharodon carcharlas 



167 



and storing the vertebrae. We are particularly in- 

 debted to Bortz, Lake & Partners Inc., who provided 

 the equipment to x-ray the vertebrae and especially 

 to W. Stubbs and W. Lake for their time and exper- 

 tise. We would like to thank S. F. J. Dudley for his 

 input and L. J. Natanson for her assistance and valu- 

 able comments on an earlier draft of the manuscript. 



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