13. . Technical Report R-456: Deep ocean biodeterioration of materials- 

 Part IV. One year at 6,800 feet, by J. S. Muraoka. Port Hueneme, Calif., 

 June 1966. (AD 636412) 



14. . Technical Report R-495: Deep ocean biodeterioration of materials- 

 Part V. Two years at 5,640 feet, by J. S. Muraoka. Port Hueneme, Calif., 

 Nov. 1966. (AD 642838) 



15. . Technical Report R-525: Deep ocean biodeterioration of materials- 

 Part VI. One year at 2,370 feet, by J. S. Muraoka. Port Hueneme, Calif., 

 May 1967. (AD 651 124) 



16. . Contract Report CR-68.012: Concept development of manned 



underwater station. Groton, Conn., General Dynamics Corporation, Electric 

 Boat Division, July 1968. 2 vols. (Contract N62399-67-C-004) (vol. 1-AD 

 841546L;vol.2-AD841350L) 



17. A. R. Jumikis. Soil mechanics. Princeton, N. J., Van Nostrand, 1962. 



18. "Geotech runs 7,000-mile seismic survey across Atlantic," Ocean 

 Industry, vol. 2, no. 10, Oct. 1967, pp. 46-49. 



19. Naval Civil Engineering Laboratory. Technical Report R-633: Preliminary 

 site survey for ocean construction experiments, by W. E. Hoffman and 



M. C. Hironaka. Port Hueneme, Calif., June 1969. (AD 693085) 



20. Army Engineer Waterways Experiment Station. Unnumbered report: 

 Subsurface exploration and sampling of soils for civil engineering purposes, 

 by M. J. Hvorslev. Vicksburg, Miss., Nov. 1949. (Report on a research 

 project of the Committee on Sampling and Testing, Soil Mechanics Division, 

 American Society of Civil Engineers. Sponsored by Engineering Foundation, 

 Harvard University, Waterways Experiment Station.) 



21 . A. F. Richards and H. W. Parker. "Surface coring for shear strength 

 measurements," in Civil engineering in the oceans, ASCE Conference, 

 San Francisco, Calif., Sept. 6-8, 1967. New York, American Society of 

 Civil Engineers, 1968, pp. 445-489. 



22. American Society for Testing Materials. Committee D-1 8 on Soils for 

 Engineering Purposes. Procedures for testing soils; nomenclature and 

 definitions, standard and tentative methods and proposed and suggested 

 methods, 4th ed. Philadelphia, Pa., Dec. 1964. 



23. Naval Civil Engineering Laboratory. Technical Report R-503: Engineering 

 properties of marine sediments near San Miguel Island, California, by 



M. C. Hironaka. Port Hueneme, Calif., Dec. 1968. (AD 644192) 



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