J. D. Richard

The nesting of the Pacific ridley turtle Lepidochelys olivacea on Playa Nancite, Costa Rica

D. Hughes, J. D. Richard, 1974 .

Some observations of sea turtle nesting activity in Costa Rica

D. Hughes, J. D. Richard, 1972 .

Shark attraction using a video-acoustic system

A. Banner, A. Myrberg, J. D. Richard, 1969 .

Some Current‐Directed Movements of Macrobrachium Acanthurus (Wiegmann 1836) (Decapoda, Palaemonidae) Under Laboratory Conditions

D. Hughes, J. D. Richard, 1973 .

Fish Attraction with Pulsed Low-Frequency Sound

J. D. Richard, 1968 .