A Manual on Methods for the Assessment of Secondary Productivity in Fresh Waters (IBP handbook)John A. Downing · First published 1984Open the Tome
Reading and reasoningDowning, John A., John Downing, John A Downing, Downing, John, DOWNING · First published 1979Open the Tome
Comparative reading; cross-national studies of behavior and processes in reading and writingDowning, John A. · First published 1972Open the Tome
The initial teaching alphabet, explained and illustratedDowning, John A. · First published 1964Open the Tome
