TY - RPRT TI - Subsea mineral resources and problems related to their development AU - V.E. McKelvey AU - J. I. Tracey AU - G.E. Stoertz AU - J. G. Vedder PY - 1969 DO - 10.3133/cir619 UR - https://pubs.usgs.gov/publication/cir619 ID - cir619 ER -