Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 1-2

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 3-18

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 19-24

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 25-29

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 31-91

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 93-100

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 101-102

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 103-124

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 125-135

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 137-162

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 163-175

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 1, pages 213-228

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 2, pages 177-185

Published in Gardens' Bulletin Singapore, in 1983, in volume 36, issue 2, pages 187-196

Published in Gardens' Bulletin Singapore, in 1983, in volume 36, issue 2, pages 197-200

Published in Gardens' Bulletin Singapore, in 1983, in volume 36, issue 2, pages 205-212

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 2, pages 229-232

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 2, pages 233-236

Published in Gardens' Bulletin, Singapore, in 1983, in volume 36, issue 2, pages 237-242