"srivastava, yogendra n. "
enviromental pollution: / yogendra.n. srivastava - 1 ed. - india : ashish 1989. - "vii, 84p.; 23 cm."
81-7024-210-x hard cover
363. 739 sri
enviromental pollution: / yogendra.n. srivastava - 1 ed. - india : ashish 1989. - "vii, 84p.; 23 cm."
81-7024-210-x hard cover
363. 739 sri