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Bischoff, J.L., R.E. Greer, and A.O. Luistro. 1970. Composition of interstitial
     waters of marine sediments: temperature of squeezing effect. Science 167:
     1245-1246.
   
Barnes, R.O. 1973. An interstitial water sampler for use with unconsolidated 
     sediments. Deep Sea Research 20:1125-1128.
   
Emery, K.O., and D. Hoggan. 1958. Gases in marine sediments.  Bulletin American
     Association Petrol. Geol. 42:2174-2188.
   
Fanning, K.A., and M.E.Q. Pilson. 1971. Interstitial silica and pH in marine 
     sediments: some effects of sampling procedures.  Science 173:1228-1231.
   
Gaillard, J.-F., H. Pauwels and G. Michard. 1989. Chemical diagenesis in coastal
     marine sediments.  Oceanologica Acta, 12:175-187.
   
Hesslein, R.H. 1976. An in situ sampler for close interval pore water studies. 
     Limnol. Oceanogr. 21:912-914.
   
Höpner, T. 1981. Design and use of a diffusion sampler for interstitial water
     from fine grained sediments. Env. Tech. Lett.  2:187-196.
   
Mangelsdorf, P.C., Jr., T.R.S. Wilson, and E. Daniell. 1969. Potassium 
     enrichments in interstitial waters of recent marine sediments. Science 
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Montgomery, J.R., C.F. Zimmermann, and M.T. Price. 1979. The collection, 
     analysis and variation of nutrients in estuarine pore water. Estuar. 
     Coast. Mar, Sci. 9:203-214.
   
Neely, R.K., and C.B. Davis. 1985. Nitrogen and phosphorus fertilization of 
     Sparganium eurycarpum Engelm. and  Typha glauca Godr. stands. I. Emergent 
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Rosen, M.N. 1971. Botulism. Pages 100-117 in Infectious and parasitic diseases 
     of wild birds. Iowa State Univ. Pr., Ames. 344pp.
   
Rutgers van der Loeff, M.M. 1980. Time variation in interstitial nutrient 
     concentrations at an exposed subtidal station in the Dutch Wadden Sea. 
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Sayles, F.L., T.R.S. Wilson, and P.C. Mangelsdorf, Jr. 1973. In situ sampler 
     for marine sedimentary pore waters: evidence for potassium depletion and 
     calcium enrichment. Science 181:154-156.

Schwedhelm, E., M. Vollmer, and M. Kersten. 1988. Determination of dissolved 
     heavy metal gradients at the sediment-water interface by use of a 
     diffusion-controlled sampler. Fresenius Z Anal. Chem. 332:756-763.

Simon, N.S. 1988. Nitrogen cycling between sediment and the shallow-water 
     column in the transition zone of the Potomac River and Estuary. I. Nitrate 
     and ammonium fluxes. Estuar., Coast, and Shelf Sci. 26:483-497.

Simon, N.S., M.M. Kennedy, and C.S. Massoni. 1985. Evaluation and use of a 
     diffusion-controlled sampler for determining chemical and dissolved oxygen 
     gradients at the sediment-water interface. Hydrobiologia 126:135-141.

Swanson, G.A. 1978. A simple lightweight core sampler for quantitating 
     waterfowl foods. J. Wildl. Manage. 42:426-428.