In February and March of 1978, a major cruise was undertaken on the R/V KNORR off the Peruvian coast near 15 deg. S in order to investigate the organic biogeochemical processes associated with upwelling areas. The purpose of this report is to collate the large amount of hydrographic, nutrient, and plankton data generated from various investigators on this cruise and use the report as a standard for the cruise participants. ...