High Tc superconductivity in quasi two-dimensional copper oxides of K2NiF4 structure
p. 0047 | Rao, C. N. R.; Ganguly, P.

News
p. 0049

Extension of Huyghen's construction of a wavefront to a nonlinear wavefront and a shockfront
p. 0050 | Prasad, Phoolan

Factors regulating mitosis in eukaryotic cells
p. 0055 | Adlakha, Ramesh C.; Rao, Potu N.

News
p. 0072

Kinetics of bromine addition to acrylonitrile and methacrylonitrile in aqueous solution
p. 0073 | Farook, S. Mohamed; Viswanathan, S.; Ganesan, R.

News
p. 0076

Histopathology of sorghum varieties resistant and susceptible to helminthosporiose infection
p. 0077 | Shree, M. P.

Announcements
p. 0080

Obtaining an annual yield in a fortnight
p. 0081 | Meshkov, Yuri

News
p. 0082

Science News
p. 0083

Evaluation of sound velocity and interaction studies in binary liquid mixtures
p. 0085 | Srivastava, A. P.

Polymer supported reagents: An improved synthesis of sulphones using anion exchange resins
p. 0087 | Deshmukh, J. G.; Jagdale, M. G.; Mane, R. B.; Salunkhe, M. M.; Wadgaonkar, P. P.

Glycogen metabolism in liver in perchlorate-treated rats
p. 0088 | Sangan, P.; Motlag, D. B.

First report of conodonts from the infra-trappean limestones at Duddukuru, Andhra Pradesh, India
p. 0090 | Sastry, A. V. R.; Murthy, A. Narasimha

In vivo effect of some metabolic inhibitors on glutamate dehydrogenase and glutamate synthase activities in excised maize tissues
p. 0093 | Singh, R. P.; Srivastava, H. S.

Aecidium painavuensis sp nov from Idukki, Kerala, India
p. 0094 | Hosagoudar, V. B.

Free amino acid content in certain insect-induced plant galls
p. 0096 | Rao, C. G. Prakasa; Devi, C. Sree

n-Butyl butyrate-induced cytological aberrations in Allium sativum L
p. 0098 | Rao, B. Digamber; Surender, P.; Janaiah, C.; Vidyavati

Effect of ovariectomy on protein pattern and concentration in Dysdercus koenigii (Hemiptera)
p. 0099 | Bhola, R. K.; Srivastava, K. P.

A report on follicular cyst in the pituitary of the bat, Hipposideros speoris (Schneider)
p. 0101 | Jagtap, A. N.; Nalavade, M. N.

Thrombo and leucocytic studies in the domestic fowl naturally infected with Raillietina tetragona (Cestoda)
p. 0103 | Sekhar, P. C.; Simha, S. S.

Modification of sex expression in mulberry (M. alba and M. indica) by silver thiosulphate
p. 0105 | Ravindran, S.; Dandin, S. B.; Kumar, R.; Jolly, M. S.

Colour polymorphism in muga silkmoth Antheraea assama Westwood
p. 0106 | Thangavdu, K.; Bhagowati, A. K.; Chakraborty, A. K.