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

Green revolution in India Por Chopra, R.N

Biology of bryophytes Por Chopra , R.N

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

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

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

Outros Autores: “...Chopra, R.N...”

Insecticidal and piscicidal plants of India Por Badhwar, R.L

Outros Autores: “...Chopra, R.N...”

Dictionary of library science

Outros Autores: “...Chopra , R.N., ed...”

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

Outros Autores: “...Chopra, R.N...”

Glossary of Indian medicinal plants Por Chopra, I.C

Outros Autores: “...Chopra, R.N...”