Published in Sida, Contributions To Botany, in 1971, in volume 4, issue 2, pages 57-227

Published in Sida, Contributions To Botany, in 1971, in volume 4, issue 3, pages 229-231

Published in Sida, Contributions To Botany, in 1971, in volume 4, issue 3, pages 232-245

Published in Sida, Contributions To Botany, in 1971, in volume 4, issue 3, pages 246-264

Published in Sida, Contributions To Botany, in 1971, in volume 4, issue 3, pages 265-273

Published in Sida, Contributions To Botany, in 1971, in volume 4, issue 3, pages 274

Published in Sida, Contributions To Botany, in 1971, in volume 4, issue 3, pages 275

Published in Sida, Contributions To Botany, in 1971, in volume 4, issue 3, pages 277