Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 1-3
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 4-13
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 14-17
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 18-21
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 22-30
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 31
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 32-265
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 266
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 267-273
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 274-275
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 276-284
Published in Gardens' Bulletin, Singapore, in 1956, in volume 15, pages 377-379