Watchman, Alan <br/><br/>
Some observations on the radiocarbon and cosmogenic isotope dating of petroglyphs, Foz Côa, Portugal / 
Alan Watchman. 
<br/><br/> Antiquity 72 (1999): 197-200 
<br/><br/> Further remarks on the age of the Foz Côa rock-engravings, Portugal, in the light of studies by absolute-science methods in the March 1997 ANTIQUITY. 
<br/><br/><label>Subjects--Index Terms: </label>ANTROPOLOGIA