I I I I I I I I 



A8C0EFGH IJ K LMNOPQBSTJVWXYZi 



r r r i f r r i i i p p f > i i i i i 



ABCDEFGHIJ KLMNOPQRSTUVWXrZ AA 68 



I , I I I I M I I 



ABCDEFGHIJ KLMNOPQRSTUVWIVZAABB 



1 M > P t P M f P f I f I I f P I P f P P T P I I i I 



ABCDEFGHIJ KLMNOPORSTUVWXYZAABB 



FIGURE 3.73. (Upper left) Brest, Crassostrea gigas , aromatic hydrocarbons, 

 December 1978. (See Figure 3.14 for key.) 



FIGURE 3.74. (Upper right) Aber Wrac'h, Crassostrea gigas , saturated hydro- 

 carbons, December 1978. 



FIGURE 3.75. (Lower left) Aber Wrac'h, Crassostrea gigas , saturated hydro- 

 carbons, June 1980. (See Figure 3.74 for key.) 



FIGURE 3.76. (Lower right) Brest, Crassostrea gigas , saturated hydrocar- 

 bons, December 1978. (See Figure 3.74 for key.) 



87 



