Advances in biotechnology of conifers
p. 0629 | Gupta, P. K.

Announcement
p. 0637

Photodynamic activity on human erythrocytes
p. 0639 | Ganesan, S.; Masilamani, V.; Natarajan, S.

Announcement
p. 0643

Iono-covalent and Yafet Kittle angle studies of slow cooled and quenched CuZn-system
p. 0644 | Sawant, S. R.; Suryavanshi, S. S.

Erratum
p. 0647

Thermally induced optical phase conjugation by degenerate four-wave mixing
p. 0648 | Prasad, B. Raghavendra; Mohan, R. Krishna; Narayanan, P. S.; Subramanian, C. K.; Sekhar, P. Chandra

Importance of cytotoxic T lymphocytes in influenza vaccine research
p. 0655 | Kelkar, Shobhana D.

News
p. 0660

Spermicidal activity of steroidal and triterpenic glycosides
p. 0661 | Pant, G.; Panwar, M. S.; Negi, D. S.; Rawat, M. S. M.

Relation between grade and abundance of manganese nodules
p. 0662 | Sudhakar, M.

Azimuthal ratio technique of interpreting radial soundings
p. 0663 | Sharma, K. K.; Ballukraya, P. N.; Jegatheesan, M. S.; Reddi, B. Rukmangada

Effect of heavy metals on superoxide dismutase activity in Pennisetum typhoideum Seedlings
p. 0664 | Reddy, S. Vijaya Kumar; Venkaiah, B.

Optimum frequency of addition of nutrient solution for mass production of Glomus fasciculatum inoculum
p. 0665 | Sreenivasa, M. N.; Bagyaraj, D. J.

Response of Westiellopsis prolifica to salt-stressII. Uptake of Na⁺ in the presence of K⁺ as chloride, nitrate and phosphate
p. 0667 | Jha, M. N.; Kaushik, B. D.

Somatic hybridization attempts between Sorghum bicolor Moench and Oryza sativa L.
p. 0668 | Murthy, U. R.; Cocking, E. C.

A new species of Phaeoramularia Muntanola
p. 0670 | Rai, A. N.

Aspergillus kambarensis, A new report from India
p. 0672 | Pandey, Hansa; Pande, Neeta; Mehrotra, B. S.

Cirrenalia tropicalis, An addition to Indian marine fungi
p. 0674 | Ravikumar, D. R.; Purushothaman, A.

Leaf spot disease of coconut incited by Bipolaris incurvata (Bernad) Alcorn
p. 0674 | Rao, S. Chander

Up-to-date life cycle of Neovossia indica (Mitra) Mundkur
p. 0675 | Dhaliwal, H. S.; Singh, D. V.

Induction of adventitious buds and plantlet regeneration in Pinus sylvestris L.
p. 0677 | Jain, S. Mohan; Newton, R. J.; Soltes, E. J.

Influence of carbon, nitrogen and phosphorus nutrition on growth of Dioscorea deltoidea callus and production of diosgenin and sterols
p. 0679 | Ravishankar, G. A.; Grewal, S.

Cytomixis in a maize trisomic
p. 0681 | Premachandran, M. N.; Sachan, J. K. S.; Sarkar, K. R.

Genotoxicity of Dormin-5 in drosophila sex-linked recessive lethal and female germ line mosaic tests
p. 0682 | Tripathy, N. K.; Routray, P. K.

Oviposition and sex ratio of Argulus siamensis var. siamensis and Argulus siamensis var. hessarghattaris (Crustacea: Branchiura) parasitic on freshwater fishes
p. 0685 | Bai, A. Sundara; Seenappa, D.; Devraj, K. V.

New records of insect parasitoids of leaf-roller and flushworm of tea
p. 0686 | Subbiah, K.

Sexual dimorphism in the larva and pupa of coconut rhinoceros beetle Oryctes rhinoceros (Coleoptera : Scarabaeidae)
p. 0686 | Mini, A.; Prabhu, V. K. K.

Book Reviews
p. 0688

Announcement
p. 0690