Field artillery.

1985:Mar/Apr; 1986:Mar/Apr; 1986:May/June; 1986:July/Aug; 1986:Sept/Oct; 1986:Nov/Dec; 1987:Jan/Feb; 1987:Mar/Apr; 1987:May/June; 1987:Aug; 1987:Oct; 1988:Feb; 1988:Apr; 1988:June; 1988:Aug; 1988:Oct; 1988:Dec; 1989:Feb; 1989:Apr; 1989:June; 1989:Aug; 1989:Oct; 1989:Dec; 1989; 1990:Feb; 1990:Apr; 1990:June; 1990:Aug; 1990:Oct; 1990:Dec; 1990; 1990-1991; 1991:Feb; 1991:Apr; 1991:June; 1991:Aug; 1991:Oct; 1991:Dec; 1991; 1992:Feb; 1992:Apr; 1992:June; 1992:Aug; 1992:Oct; 1992; 1992-1993 1992-1993; 1993:Feb; 1993:Apr; 1993:June; 1993:Aug; 1993:Oct; 1993:Dec; 1994:Feb; 1994:Apr; 1994:June; 1994:Aug; 1994:Oct; 1994:Dec; 1994; 1994-1995 1994-1995; 1995:Jan/Feb; 1995:Feb; 1995:Jul/Aug; 1995:Apr; 1995:June; 1995:Sept/Oct; 1995:Nov/Dec; 1996:Jan/Feb; 1996:Mar/Apr; 1996:May/June; 1996:Jul/Aug; 1996:Sept/Oct; 1996:Nov/Dec; 1996jan.-feb., may-dec.1997 1996-1997; 1997:Jan/Feb; 1997:Mar/Apr; 1997:May/June; 1997:Jul/Aug; 1997:Sept/Oct; 1997:Nov/Dec; 1998:Jan/Feb; 1998:Mar/Apr; 1998:May/June; 1998:Jul/Aug; 1998:Sept/Oct; 1998-1999 1998-1999; 1999:Jan/Feb; 1999:Mar/Apr; 1999:May/June; 1999:Jul/Aug; 1999:Sept/Oct; 1999:Nov/Dec; 2000:Jan/Feb; 2000:Mar/Apr; 2000:May/June; 2000:July/Aug; 2000:Sept/Oct; 2000:Nov/Dec; 2000-2001 2000-2001; 2001:Jan/Feb; 2001:Mar/Apr; 2001:May/June; 2001:Jul/Aug; 2001:Sept/Oct; 2001:Nov/Dec; 2002:Mar/Apr; 2002:May-Aug; 2002:Sept/Oct; 2002:Nov/Dec; Jan-Feb 2002; 2002Jan.-Feb. 2002; 2003:Jan/Feb; 2003:Mar/Apr; 2003:May/June; 2003:Jul/Aug; 2003:Sept/Oct; 2003:Nov/Dec; 2003Nov.-Dec. 2003; 2004:Jan/Feb; 2004:Mar-June; 2004:Jul/Aug; 2004:Sept/Oct; 2004:Nov/Dec; 2005:Jan/Feb; 2005:Mar/Apr; 2005:May/June; 2005:July/Aug; 2005:Sept/Oct; 2005:Nov/Dec; 2006:Jan/Feb; 2006:Mar/Apr; 2006:May/June; 2006:Jul/Aug; 2006:Sept/Oct; 2007:Jan/Feb; 2007:Mar/Apr; no.1-4; v.53/no.2; v.54; v.55; 1989NO5-6