ZOBELL, C. E. 
1946. Marine microbiology. A monograph on hydro- 
bacteriology. Chronica Botanica Co., Waltham, Mass. 
ZOBELL, C. E., and C. B. FELTHAM. 
1942. The bacterial flora of a marine mud flat as an 
ecological factor. Ecology, 23: 69-78. 
ZOPF , We 
1892. Zur Kenntnis der Labyrinthuleen, einer Familie der 
Mycetozoen. Beitr. Physiol. Morph. niederer Organisinen, 
2: 36-48. 
39 
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