Indigenous drugs of India : their medical and economic aspects -н Chopra, R.N

Green revolution in India -н Chopra, R.N

Biology of bryophytes -н Chopra , R.N

Indian ephedras : their chemistry and pharmacology -н Chopra, R.N

Food policy in India : a survey -н Chopra, R.N

Common medicinal plants of Darjeeling and the Sikkim Himalayas -н Biswas, K.

Бусад зохиолчид: “…Chopra, R.N…”

Insecticidal and piscicidal plants of India -н Badhwar, R.L

Бусад зохиолчид: “…Chopra, R.N…”

Dictionary of library science

Бусад зохиолчид: “…Chopra , R.N., ed…”

Supplement to glossary of Indian medicinal plants -н Chopra, I.C

Бусад зохиолчид: “…Chopra, R.N…”

Glossary of Indian medicinal plants -н Chopra, I.C

Бусад зохиолчид: “…Chopra, R.N…”