Singh, Appar Apar. Sādhārana wigiāna. General science, matter and methods for J. B. T. students. - [1962] - vii, 355, 86 p. ill., diagrs. 22 cm. In Panjabi. LCCN: sa 63003709 Subjects--Topical Terms: Science. LC Class. No.: Q161 / .S616