共 9 条
[1]
[Anonymous], 1970, OFFICIAL METHODS ANA
[2]
HILDITCH T. P., 1938, Journal of the Society of Chemical Industry, V57, P44
[3]
KARTHA A. R. S., 1957, INDIAN JOUR AGRIC SCI, V27, P211
[4]
SHARMA ND, 1975, THESIS MEERUT U
[5]
SINGH J., 1958, Journal of Scientific and Industrial Research, V17C, P7
[6]
SINGH J., 1957, Journal of Scientific and Industrial Research, V16C, P164
[9]
SINGH J, 1956, J SCI IND RES INDIA, VC15, P222