I am looking to source pdf's of Suzanne Batra's papers on social bees in India, published in the mid 1960's (there are several):

1967, Crop pollination and the flower relationships of the wild bees of Ludhiana, India. J. Kansas Entom. Soc., 40: 164-177.

1966: Nests and social behavior of halictine bees of India. Indian J. Entom., 28: 37-393.

1966: Social behavior and nests of some Nomiine bees in India. Ins. Soc. 13: 145-154.

Does anyone have any leads that I might be able to follow on these?

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