What has the author R Cravell written?

Answer 1

Richard Harold Crum has written:

'A non-adsorptive method for the isolation and fractionation of dissolved organic matter from aquatic systems' -- subject(s): Environmental aspects, Environmental aspects of Organic compounds, Hydrology, Organic compounds, Water chemistry

Answer 2

Iz Crain has written:

'The three bears and Chicken little' -- subject(s): Children's plays

Answer 3

R. Allen Craine has written:

'The big U' -- subject(s): Pearl Harbor (Hawaii), Attack on, 1941, Utah (Ship)

Answer 4

R. Cravell has written:

'Aerobatics simply explained' -- subject(s): Airplanes, Piloting