1
by Maheswaramma, K. Sesha, Chugh, Mridula
Published 2016
Pearson
Subjects: ...Chemistry, Technical / http://id.loc.gov/authorities/subjects/sh85023029...

2
by Maheswaramma, K. Sesha, Chugh, Mridula
Published 2014
Dorling Kindersley (India)
Subjects: ...Chemistry, Technical / http://id.loc.gov/authorities/subjects/sh85023029...