SMITH, B.D., BOTSFORD, L.W., WING, S., J.F. QUINN, 1995. Estimation of growth and mortality parameters from size frequency distributions lacking age patterns : An application to the red sea urchin (Strongylocentrotus franciscanus). Pages 73-74 in North Pacific Symposium on Invertebrate Stock, Assessment and Management, Nanaimo, B.C., Canada, March 6-10 .