By Brooks, Margaret M., Knight, Charles
By Boag, David
By Branch, Bill, Branch, Bill
By Harrap, Simon, Redman, Nigel
By Lach, Lori, Parr, Catherine, Abbott, Kirsti
By McFarland, William N., etc., Pough, F. Harvey, Heiser, John B.
By Shipman, Pat
By Lonsdale, Chris
By Robinson, Maureen A., Wiggins, Judith F.
By Schmidt-Nielsen
By Ford, Sarah
By Taylor
By Mahon, Andrew
By Preston-Mafham, Rod, Ken
By Ted Benton
By The Barn Owl Trust
By McFarland, William N., etc., Pough, Harvey F., Hesner, John B., F. Harvey
By Kano, T., Vineberg, Evelyn Ono
By Stevens, C. Edward, Hume, Ian D.
By Leonard, M.G., M.G. Leonard
By Muir, William W.
By Brown, David S
By Speight, Martin R., Wainhouse, David
By Faris, Ariana, van Ooijen, Els
By Hunter, W.D.Russell-
By Griffin
By Berenbaum, Dr. May R.
By Laming, P
By Kardong, Kenneth
By Cooper, J. E., Jackson, O.F.