000			00429nam a2200145Ia 4500
008			170101s1971 xx 000 0 und d
082			_a598.25 H61B
100			_aHICKIN, Norman E
245		0	_aBird nest-boxing : a contribution to bird conservation by the use of artificial nest-sites
260			_bLondon _c1971
300			_a172p
650			_aBIRDS -- EGGS AND NESTS
653			_aBIRDS -- EGGS AND NESTS
942			_2ddc _cB
999			_c45996 _d45996