by K"rzhin, Kh, Apostolov, I. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Rastenievd́ni nauki (1997)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Pochvoznanie, Agrokhimiya i Rastitelna Zashchita (Bulgaria) (1987)

by K"rzhin Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria)), Mikhova, S, Iliev, I. (Institut po Pshenitsata i Sl"nchogleda "Dobrudzha", General Toshevo (Bulgaria))
Published in Rastenievd́ni nauki (1997)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria)), Ilieva, I, Mikhova, S
Published in Rastenievd́ni nauki (1990)

by K"rzhin, Kh, Stefcheva, M. (Institut za Zashchita na Rasteniyata, 2230 Kostinbrod (Bulgaria)), Kiryakova, V
Published in Rastenievd́ni nauki (2003)

by K"rzhin, Kh, Stefcheva, M, Rachova, A. (Institut za Zashchita na Rasteniyata, 2230 Kostinbrod (Bulgaria))
Published in Rastenievd́ni nauki (2003)

by K"rzhin, Kh, Gospodinova, E. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Rastenievd́ni nauki (1988)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, 2230 Kostinbrod (Bulgaria))
Published in Rastenievd́ni nauki (2002)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Rastenievd́ni nauki (1994)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Rastenievd́ni nauki (1992)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Pochvoznanie, Agrokhimiya i Rastitelna Zashchita (Bulgaria) (1987)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Pochvoznanie i Agrokhimiya (Bulgaria) (1985)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria)), Margina, A. (Institut po Rozata, Eterichnomaslenite i Lekarstvenite Kulturi, Kazanl"k (Bulgaria))
Published in Rastenievd́ni nauki (1997)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Selskostopanska Nauka (Bulgaria) (1982)

by Todorova, M, K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Rastenievd́ni nauki (1990)

by K"rzhin, Kh, Gospodinova, E. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Rastenievd́ni nauki (1990)

by K"rzhin, Kh. (Institut za Zashchita na Rasteniyata, Kostinbrod (Bulgaria))
Published in Rasteniev"dni Nauki (Bulgaria) (1976)