Published in Gardens' Bulletin, Singapore, in 1971, in volume 25, issue 3, pages 335-353

Created: 2016-08-10, modified: 2016-08-10

Published in Gardens' Bulletin, Singapore, in 1971, in volume 25, issue 3, pages 355-381

Created: 2016-08-10, modified: 2016-08-10

Published in Gardens' Bulletin, Singapore, in 1971, in volume 25, issue 3, pages 383-384

Created: 2016-08-10, modified: 2016-08-10

Published in Gardens' Bulletin, Singapore, in 1971, in volume 25, issue 3, pages 385

Created: 2016-08-10, modified: 2016-08-10