Katsarov, V., Beltcheva, Y., Marinov, S., Marinov, I. A model for objective presentation of the rentgen ray, as a factor of the health and ecological education. Plovdiv: 2009 81-84,.
Katsarov, V., Beltcheva, Y., Marinov, S., Marinov, I. A model for objective presentation of the rentgen ray, as a factor of the health and ecological education. Plovdiv: 2009 81-84,.
Katsarov, V., Beltcheva, Y., Marinov, S., Marinov, I. (2009) A model for objective presentation of the rentgen ray, as a factor of the health and ecological education, Plovdiv: 81-84,.
Katsarov, V., Beltcheva, Y., Marinov, S., & Marinov, I. (2009). A model for objective presentation of the rentgen ray, as a factor of the health and ecological education. Scientific researches of the Union of scientists in Bulgaria - Plovdiv. Series B, 12 81-84.
Katsarov V, Beltcheva Y, Marinov S, Marinov I. A model for objective presentation of the rentgen ray, as a factor of the health and ecological education. Scientific researches of the Union of scientists in Bulgaria - Plovdiv. Series B. 2009; 12: 81-84.
