Published in Gardens' Bulletin, Singapore, in 1975, in volume 28, issue 1, pages 1-181

Created: 2016-07-14, modified: 2016-07-14

Published in Gardens' Bulletin, Singapore, in 1975, in volume 30, pages 9-12

Created: 2016-07-14, modified: 2016-07-14

Published in Gardens' Bulletin, Singapore, in 1975, in volume 30, pages 293-298

Created: 2016-07-14, modified: 2016-07-14