Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 1, pages 1-16

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 1, pages 17-65

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 1, pages 67-83

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 1, pages 85-94

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 1, pages 95-119

Published in Gardens' Bulletin Singapore, in 1974, in volume 27, issue 1, pages 121-122

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 1, pages 123-129

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 1, pages 131-132

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 1, pages 133-141

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 2, pages 143-154

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 2, pages 155-165

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 2, pages 167-182

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 2, pages 183-220

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 2, pages 221-245

Published in Gardens' Bulletin, Singapore, in 1974, in volume 27, issue 2, pages 247-266