Published in Raptor Research, in 1972, in volume 6, issue 1, pages 1-3

Created: 2017-04-08, modified: 2017-04-08

Published in Raptor Research, in 1972, in volume 6, issue 1, pages 4-5

Created: 2017-04-08, modified: 2017-04-08

Published in Raptor Research, in 1972, in volume 6, issue 1, pages 6-10

Created: 2017-04-08, modified: 2017-04-08

Published in Raptor Research, in 1972, in volume 6, issue 1, pages 11-15

Created: 2017-04-08, modified: 2017-04-08

Published in Raptor Research, in 1972, in volume 6, issue 1, pages 16-41

Created: 2017-04-08, modified: 2017-04-08