HEL D607 HELMKAMP, George K Teachers manual : selected experiments i organic chemistry / George K. Helmkamp and Harry W. Johnson. – 2nd ed.. – London : W. H. Freeman, 1968. 64 p. 1. Chemistry 1. Organic chemistry I. Johnson, Harry W © Copyright 2021 Kalyani Mahavidyalaya Library . All Rights Reserved | Powered by Koha. | Customised by Bengal Library Association.
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