"Completion report : July 1, 1973 to June 30, 1976." "Clam surveys have been conducted in Oregon's estuaries since 1973. During this project period primary objectives were (1) to locate suitable intertidal and subtidal clam planting sites and to determine the feasibility of planting laboratory spawned clams; (2) to determine the potential for a subtidal clam fishery in Oregon; (3) to develop techniques for spawning and rearing clams, (4) to refine techniques for aging clams, (5) to develop appropriate subtidal clam management schemes applicable on a coastwide basis, and (6) to determine the feasibility of purchasing and planting juvenile red abalone along the Oregon coast." (Introduction). Includes maps of subtidal clam beds in Tillamook, Yaquina and Coos bays.