41.

Library: Library of Islamic Parliament (Tehran)

42.

Library: Library of Islamic Parliament (Tehran)

43.

Library: Library of Islamic Parliament (Tehran)

44.

Library: Library of Islamic Parliament (Tehran)

45.

Library: Library of Islamic Parliament (Tehran)

46.

Library: Library of Islamic Parliament (Tehran)

47. .......................

Author:

Library: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)

Subject: ، Physics

Classification :
QC
21
.
S616

48. ......................

Library: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)

Subject: Atmospheric electricity-Congresses ، Atmospheric diffusion

Classification :
QC
691
.
C6

49. ......................

Author:

Library: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)

Subject: Study and teaching ، Electric engineering,Study and teaching ، Electricity

Classification :
TK
165
.
F72

50. ......................

Author:

Library: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)

Subject: ، Electricity,، Magnetism

Classification :
QC
518
.
B544

51.

Library: State Department Library (Tehran)

52.

Library: State Department Library (Tehran)

53.

Library: State Department Library (Tehran)

54.

Library: State Department Library (Tehran)

55.

Library: State Department Library (Tehran)

56.

Library: State Department Library (Tehran)

57.

Library: State Department Library (Tehran)

58.

Library: State Department Library (Tehran)

59.

Library: State Department Library (Tehran)

60.

Library: State Department Library (Tehran)