Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 1-19

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 21-32

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 33-44

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 45-49

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 51-63

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 65-68

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 69-71

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 73-81

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 83-103

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 1, pages 105-106

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 2, pages 107-135

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 2, pages 137-190

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 2, pages 191-198

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 2, pages 199-207

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 2, pages 209-226

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 2, pages 227-229

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 2, pages 231-232

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 2, pages 233-234

Published in Gardens' Bulletin Singapore, in 1982, in volume 35, issue 2, pages 235-236