Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 1-2

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 3-11

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 13-18

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 19-23

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 25-33

Published in Gardens' Bulletin Singapore, in 1977, in volume 29, pages 35-39

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 41-55

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 73-80

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 81-101

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 103-126

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 127-136

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 137-142

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 143-144

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 145-150

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 151-153

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 155-160

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 161-164

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 165-173

Published in Gardens' Bulletin Singapore, in 1977, in volume 29, pages 175-181

Published in Gardens' Bulletin Singapore, in 1977, in volume 29, pages 183-189

Published in Gardens' Bulletin Singapore, in 1977, in volume 29, pages 191-205

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 207-232

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 233-237

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 239-250

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 251-253

Published in Gardens' Bulletin, Singapore, in 1977, in volume 29, pages 255-266

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 1-3

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 5

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 7-8

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 13-15

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 17-19

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 21-29

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 31-43

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 45-58

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 59-62

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 63-74

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 75-78

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 79-83

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 85-95

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 97-100

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 101-110

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 111-122

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 123-164

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 165-219

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 221-238

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 239-250

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 251-267

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 269-274

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 275-291

Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 299-312